Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2016.0931
Samba security updates
13 April 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: samba
Publisher: Red Hat
Operating System: Red Hat
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Root Compromise -- Existing Account
Access Privileged Data -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Denial of Service -- Existing Account
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-2118 CVE-2016-2115 CVE-2016-2114
CVE-2016-2113 CVE-2016-2112 CVE-2016-2111
CVE-2016-2110 CVE-2015-5370
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2016-0611.html
https://rhn.redhat.com/errata/RHSA-2016-0619.html
https://rhn.redhat.com/errata/RHSA-2016-0621.html
https://rhn.redhat.com/errata/RHSA-2016-0623.html
https://rhn.redhat.com/errata/RHSA-2016-0625.html
Comment: This bulletin contains five (5) Red Hat security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running samba check for an updated version of the software for their
operating system.
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Red Hat Security Advisory
Synopsis: Critical: samba security update
Advisory ID: RHSA-2016:0611-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0611.html
Issue date: 2016-04-12
CVE Names: CVE-2015-5370 CVE-2016-2111 CVE-2016-2112
CVE-2016-2115 CVE-2016-2118
=====================================================================
1. Summary:
An update for samba is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security impact
of Critical. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. Description:
Samba is an open-source implementation of the Server Message Block (SMB)
protocol and the related Common Internet File System (CIFS) protocol, which
allow PC-compatible machines to share files, printers, and various
information.
Security Fix(es):
* Multiple flaws were found in Samba's DCE/RPC protocol implementation. A
remote, authenticated attacker could use these flaws to cause a denial of
service against the Samba server (high CPU load or a crash) or, possibly,
execute arbitrary code with the permissions of the user running Samba
(root). This flaw could also be used to downgrade a secure DCE/RPC
connection by a man-in-the-middle attacker taking control of an Active
Directory (AD) object and compromising the security of a Samba Active
Directory Domain Controller (DC). (CVE-2015-5370)
Note: While Samba packages as shipped in Red Hat Enterprise Linux do not
support running Samba as an AD DC, this flaw applies to all roles Samba
implements.
* A protocol flaw, publicly referred to as Badlock, was found in the
Security Account Manager Remote Protocol (MS-SAMR) and the Local Security
Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated
DCE/RPC connection that a client initiates against a server could be used
by a man-in-the-middle attacker to impersonate the authenticated user
against the SAMR or LSA service on the server. As a result, the attacker
would be able to get read/write access to the Security Account Manager
database, and use this to reveal all passwords or any other potentially
sensitive information in that database. (CVE-2016-2118)
* It was discovered that Samba configured as a Domain Controller would
establish a secure communication channel with a machine using a spoofed
computer name. A remote attacker able to observe network traffic could use
this flaw to obtain session-related information about the spoofed machine.
(CVE-2016-2111)
* It was found that Samba's LDAP implementation did not enforce integrity
protection for LDAP connections. A man-in-the-middle attacker could use
this flaw to downgrade LDAP connections to use no integrity protection,
allowing them to hijack such connections. (CVE-2016-2112)
* It was found that Samba did not enable integrity protection for IPC
traffic by default. A man-in-the-middle attacker could use this flaw to
view and modify the data sent between a Samba server and a client.
(CVE-2016-2115)
Red Hat would like to thank the Samba project for reporting these issues.
Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter
of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter
of CVE-2016-2118, CVE-2016-2112, and CVE-2016-2115.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the smb service will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1309987 - CVE-2015-5370 samba: crash in dcesrv_auth_bind_ack due to missing error check
1311902 - CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
1311903 - CVE-2016-2112 samba: Missing downgrade detection
1312084 - CVE-2016-2115 samba: Smb signing not required by default when smb client connection is used for ipc usage
1317990 - CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
samba-3.6.23-30.el6_7.src.rpm
i386:
libsmbclient-3.6.23-30.el6_7.i686.rpm
samba-client-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-winbind-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
x86_64:
libsmbclient-3.6.23-30.el6_7.i686.rpm
libsmbclient-3.6.23-30.el6_7.x86_64.rpm
samba-client-3.6.23-30.el6_7.x86_64.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
samba-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-doc-3.6.23-30.el6_7.i686.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.i686.rpm
samba-swat-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.i686.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
libsmbclient-devel-3.6.23-30.el6_7.x86_64.rpm
samba-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-doc-3.6.23-30.el6_7.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_7.x86_64.rpm
samba-swat-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
samba-3.6.23-30.el6_7.src.rpm
x86_64:
samba-client-3.6.23-30.el6_7.x86_64.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64:
libsmbclient-3.6.23-30.el6_7.i686.rpm
libsmbclient-3.6.23-30.el6_7.x86_64.rpm
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
libsmbclient-devel-3.6.23-30.el6_7.x86_64.rpm
samba-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-doc-3.6.23-30.el6_7.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_7.x86_64.rpm
samba-swat-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
samba-3.6.23-30.el6_7.src.rpm
i386:
libsmbclient-3.6.23-30.el6_7.i686.rpm
samba-3.6.23-30.el6_7.i686.rpm
samba-client-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-winbind-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
ppc64:
libsmbclient-3.6.23-30.el6_7.ppc.rpm
libsmbclient-3.6.23-30.el6_7.ppc64.rpm
samba-3.6.23-30.el6_7.ppc64.rpm
samba-client-3.6.23-30.el6_7.ppc64.rpm
samba-common-3.6.23-30.el6_7.ppc.rpm
samba-common-3.6.23-30.el6_7.ppc64.rpm
samba-debuginfo-3.6.23-30.el6_7.ppc.rpm
samba-debuginfo-3.6.23-30.el6_7.ppc64.rpm
samba-winbind-3.6.23-30.el6_7.ppc64.rpm
samba-winbind-clients-3.6.23-30.el6_7.ppc.rpm
samba-winbind-clients-3.6.23-30.el6_7.ppc64.rpm
s390x:
libsmbclient-3.6.23-30.el6_7.s390.rpm
libsmbclient-3.6.23-30.el6_7.s390x.rpm
samba-3.6.23-30.el6_7.s390x.rpm
samba-client-3.6.23-30.el6_7.s390x.rpm
samba-common-3.6.23-30.el6_7.s390.rpm
samba-common-3.6.23-30.el6_7.s390x.rpm
samba-debuginfo-3.6.23-30.el6_7.s390.rpm
samba-debuginfo-3.6.23-30.el6_7.s390x.rpm
samba-winbind-3.6.23-30.el6_7.s390x.rpm
samba-winbind-clients-3.6.23-30.el6_7.s390.rpm
samba-winbind-clients-3.6.23-30.el6_7.s390x.rpm
x86_64:
libsmbclient-3.6.23-30.el6_7.i686.rpm
libsmbclient-3.6.23-30.el6_7.x86_64.rpm
samba-3.6.23-30.el6_7.x86_64.rpm
samba-client-3.6.23-30.el6_7.x86_64.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-doc-3.6.23-30.el6_7.i686.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.i686.rpm
samba-swat-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.i686.rpm
ppc64:
libsmbclient-devel-3.6.23-30.el6_7.ppc.rpm
libsmbclient-devel-3.6.23-30.el6_7.ppc64.rpm
samba-debuginfo-3.6.23-30.el6_7.ppc.rpm
samba-debuginfo-3.6.23-30.el6_7.ppc64.rpm
samba-doc-3.6.23-30.el6_7.ppc64.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.ppc64.rpm
samba-swat-3.6.23-30.el6_7.ppc64.rpm
samba-winbind-devel-3.6.23-30.el6_7.ppc.rpm
samba-winbind-devel-3.6.23-30.el6_7.ppc64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.ppc64.rpm
s390x:
libsmbclient-devel-3.6.23-30.el6_7.s390.rpm
libsmbclient-devel-3.6.23-30.el6_7.s390x.rpm
samba-debuginfo-3.6.23-30.el6_7.s390.rpm
samba-debuginfo-3.6.23-30.el6_7.s390x.rpm
samba-doc-3.6.23-30.el6_7.s390x.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.s390x.rpm
samba-swat-3.6.23-30.el6_7.s390x.rpm
samba-winbind-devel-3.6.23-30.el6_7.s390.rpm
samba-winbind-devel-3.6.23-30.el6_7.s390x.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.s390x.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
libsmbclient-devel-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-doc-3.6.23-30.el6_7.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_7.x86_64.rpm
samba-swat-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
samba-3.6.23-30.el6_7.src.rpm
i386:
libsmbclient-3.6.23-30.el6_7.i686.rpm
samba-3.6.23-30.el6_7.i686.rpm
samba-client-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-winbind-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
x86_64:
libsmbclient-3.6.23-30.el6_7.i686.rpm
libsmbclient-3.6.23-30.el6_7.x86_64.rpm
samba-3.6.23-30.el6_7.x86_64.rpm
samba-client-3.6.23-30.el6_7.x86_64.rpm
samba-common-3.6.23-30.el6_7.i686.rpm
samba-common-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_7.i686.rpm
samba-winbind-clients-3.6.23-30.el6_7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
i386:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-doc-3.6.23-30.el6_7.i686.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.i686.rpm
samba-swat-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.i686.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_7.i686.rpm
libsmbclient-devel-3.6.23-30.el6_7.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_7.i686.rpm
samba-debuginfo-3.6.23-30.el6_7.x86_64.rpm
samba-doc-3.6.23-30.el6_7.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_7.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_7.x86_64.rpm
samba-swat-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_7.i686.rpm
samba-winbind-devel-3.6.23-30.el6_7.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2015-5370
https://access.redhat.com/security/cve/CVE-2016-2111
https://access.redhat.com/security/cve/CVE-2016-2112
https://access.redhat.com/security/cve/CVE-2016-2115
https://access.redhat.com/security/cve/CVE-2016-2118
https://access.redhat.com/security/updates/classification/#critical
https://access.redhat.com/security/vulnerabilities/badlock
https://access.redhat.com/articles/2253041
http://badlock.org/
https://access.redhat.com/articles/2243351
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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=====================================================================
Red Hat Security Advisory
Synopsis: Critical: samba security update
Advisory ID: RHSA-2016:0619-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0619.html
Issue date: 2016-04-12
CVE Names: CVE-2015-5370 CVE-2016-2110 CVE-2016-2111
CVE-2016-2112 CVE-2016-2115 CVE-2016-2118
=====================================================================
1. Summary:
An update for samba is now available for Red Hat Enterprise Linux 6.2
Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update
Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, and Red Hat
Enterprise Linux 6.6 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Critical. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux HPC Node EUS (v. 6.6) - x86_64
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.2) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.6) - i386, ppc64, s390x, x86_64
3. Description:
Samba is an open-source implementation of the Server Message Block (SMB)
protocol and the related Common Internet File System (CIFS) protocol, which
allow PC-compatible machines to share files, printers, and various
information.
Security Fix(es):
* Multiple flaws were found in Samba's DCE/RPC protocol implementation. A
remote, authenticated attacker could use these flaws to cause a denial of
service against the Samba server (high CPU load or a crash) or, possibly,
execute arbitrary code with the permissions of the user running Samba
(root). This flaw could also be used to downgrade a secure DCE/RPC
connection by a man-in-the-middle attacker taking control of an Active
Directory (AD) object and compromising the security of a Samba Active
Directory Domain Controller (DC). (CVE-2015-5370)
Note: While Samba packages as shipped in Red Hat Enterprise Linux do not
support running Samba as an AD DC, this flaw applies to all roles Samba
implements.
* A protocol flaw, publicly referred to as Badlock, was found in the
Security Account Manager Remote Protocol (MS-SAMR) and the Local Security
Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated
DCE/RPC connection that a client initiates against a server could be used
by a man-in-the-middle attacker to impersonate the authenticated user
against the SAMR or LSA service on the server. As a result, the attacker
would be able to get read/write access to the Security Account Manager
database, and use this to reveal all passwords or any other potentially
sensitive information in that database. (CVE-2016-2118)
* Several flaws were found in Samba's implementation of NTLMSSP
authentication. An unauthenticated, man-in-the-middle attacker could use
this flaw to clear the encryption and integrity flags of a connection,
causing data to be transmitted in plain text. The attacker could also force
the client or server into sending data in plain text even if encryption was
explicitly requested for that connection. (CVE-2016-2110)
* It was discovered that Samba configured as a Domain Controller would
establish a secure communication channel with a machine using a spoofed
computer name. A remote attacker able to observe network traffic could use
this flaw to obtain session-related information about the spoofed machine.
(CVE-2016-2111)
* It was found that Samba's LDAP implementation did not enforce integrity
protection for LDAP connections. A man-in-the-middle attacker could use
this flaw to downgrade LDAP connections to use no integrity protection,
allowing them to hijack such connections. (CVE-2016-2112)
* It was found that Samba did not enable integrity protection for IPC
traffic by default. A man-in-the-middle attacker could use this flaw to
view and modify the data sent between a Samba server and a client.
(CVE-2016-2115)
Red Hat would like to thank the Samba project for reporting these issues.
Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter
of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter
of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, and CVE-2016-2115.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the smb service will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1309987 - CVE-2015-5370 samba: crash in dcesrv_auth_bind_ack due to missing error check
1311893 - CVE-2016-2110 samba: Man-in-the-middle attacks possible with NTLMSSP authentication
1311902 - CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
1311903 - CVE-2016-2112 samba: Missing downgrade detection
1312084 - CVE-2016-2115 samba: Smb signing not required by default when smb client connection is used for ipc usage
1317990 - CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
6. Package List:
Red Hat Enterprise Linux HPC Node EUS (v. 6.6):
Source:
samba-3.6.23-30.el6_6.src.rpm
x86_64:
samba-client-3.6.23-30.el6_6.x86_64.rpm
samba-common-3.6.23-30.el6_6.i686.rpm
samba-common-3.6.23-30.el6_6.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_6.i686.rpm
samba-winbind-clients-3.6.23-30.el6_6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6):
x86_64:
libsmbclient-3.6.23-30.el6_6.i686.rpm
libsmbclient-3.6.23-30.el6_6.x86_64.rpm
libsmbclient-devel-3.6.23-30.el6_6.i686.rpm
libsmbclient-devel-3.6.23-30.el6_6.x86_64.rpm
samba-3.6.23-30.el6_6.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.x86_64.rpm
samba-doc-3.6.23-30.el6_6.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_6.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_6.x86_64.rpm
samba-swat-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_6.i686.rpm
samba-winbind-devel-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_6.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.2):
Source:
samba-3.6.23-30.el6_2.src.rpm
x86_64:
libsmbclient-3.6.23-30.el6_2.i686.rpm
libsmbclient-3.6.23-30.el6_2.x86_64.rpm
samba-3.6.23-30.el6_2.x86_64.rpm
samba-client-3.6.23-30.el6_2.x86_64.rpm
samba-common-3.6.23-30.el6_2.i686.rpm
samba-common-3.6.23-30.el6_2.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_2.i686.rpm
samba-debuginfo-3.6.23-30.el6_2.x86_64.rpm
samba-winbind-3.6.23-30.el6_2.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_2.i686.rpm
samba-winbind-clients-3.6.23-30.el6_2.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.4):
Source:
samba-3.6.23-30.el6_4.src.rpm
x86_64:
libsmbclient-3.6.23-30.el6_4.i686.rpm
libsmbclient-3.6.23-30.el6_4.x86_64.rpm
samba-3.6.23-30.el6_4.x86_64.rpm
samba-client-3.6.23-30.el6_4.x86_64.rpm
samba-common-3.6.23-30.el6_4.i686.rpm
samba-common-3.6.23-30.el6_4.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_4.i686.rpm
samba-debuginfo-3.6.23-30.el6_4.x86_64.rpm
samba-winbind-3.6.23-30.el6_4.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_4.i686.rpm
samba-winbind-clients-3.6.23-30.el6_4.x86_64.rpm
Red Hat Enterprise Linux Server AUS (v. 6.5):
Source:
samba-3.6.23-30.el6_5.src.rpm
x86_64:
libsmbclient-3.6.23-30.el6_5.i686.rpm
libsmbclient-3.6.23-30.el6_5.x86_64.rpm
samba-3.6.23-30.el6_5.x86_64.rpm
samba-client-3.6.23-30.el6_5.x86_64.rpm
samba-common-3.6.23-30.el6_5.i686.rpm
samba-common-3.6.23-30.el6_5.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_5.i686.rpm
samba-debuginfo-3.6.23-30.el6_5.x86_64.rpm
samba-winbind-3.6.23-30.el6_5.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_5.i686.rpm
samba-winbind-clients-3.6.23-30.el6_5.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 6.6):
Source:
samba-3.6.23-30.el6_6.src.rpm
i386:
libsmbclient-3.6.23-30.el6_6.i686.rpm
samba-3.6.23-30.el6_6.i686.rpm
samba-client-3.6.23-30.el6_6.i686.rpm
samba-common-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-winbind-3.6.23-30.el6_6.i686.rpm
samba-winbind-clients-3.6.23-30.el6_6.i686.rpm
ppc64:
libsmbclient-3.6.23-30.el6_6.ppc.rpm
libsmbclient-3.6.23-30.el6_6.ppc64.rpm
samba-3.6.23-30.el6_6.ppc64.rpm
samba-client-3.6.23-30.el6_6.ppc64.rpm
samba-common-3.6.23-30.el6_6.ppc.rpm
samba-common-3.6.23-30.el6_6.ppc64.rpm
samba-debuginfo-3.6.23-30.el6_6.ppc.rpm
samba-debuginfo-3.6.23-30.el6_6.ppc64.rpm
samba-winbind-3.6.23-30.el6_6.ppc64.rpm
samba-winbind-clients-3.6.23-30.el6_6.ppc.rpm
samba-winbind-clients-3.6.23-30.el6_6.ppc64.rpm
s390x:
libsmbclient-3.6.23-30.el6_6.s390.rpm
libsmbclient-3.6.23-30.el6_6.s390x.rpm
samba-3.6.23-30.el6_6.s390x.rpm
samba-client-3.6.23-30.el6_6.s390x.rpm
samba-common-3.6.23-30.el6_6.s390.rpm
samba-common-3.6.23-30.el6_6.s390x.rpm
samba-debuginfo-3.6.23-30.el6_6.s390.rpm
samba-debuginfo-3.6.23-30.el6_6.s390x.rpm
samba-winbind-3.6.23-30.el6_6.s390x.rpm
samba-winbind-clients-3.6.23-30.el6_6.s390.rpm
samba-winbind-clients-3.6.23-30.el6_6.s390x.rpm
x86_64:
libsmbclient-3.6.23-30.el6_6.i686.rpm
libsmbclient-3.6.23-30.el6_6.x86_64.rpm
samba-3.6.23-30.el6_6.x86_64.rpm
samba-client-3.6.23-30.el6_6.x86_64.rpm
samba-common-3.6.23-30.el6_6.i686.rpm
samba-common-3.6.23-30.el6_6.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-clients-3.6.23-30.el6_6.i686.rpm
samba-winbind-clients-3.6.23-30.el6_6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source:
samba-3.6.23-30.el6_2.src.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_2.i686.rpm
libsmbclient-devel-3.6.23-30.el6_2.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_2.i686.rpm
samba-debuginfo-3.6.23-30.el6_2.x86_64.rpm
samba-doc-3.6.23-30.el6_2.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_2.x86_64.rpm
samba-swat-3.6.23-30.el6_2.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_2.i686.rpm
samba-winbind-devel-3.6.23-30.el6_2.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_2.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.4):
Source:
samba-3.6.23-30.el6_4.src.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_4.i686.rpm
libsmbclient-devel-3.6.23-30.el6_4.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_4.i686.rpm
samba-debuginfo-3.6.23-30.el6_4.x86_64.rpm
samba-doc-3.6.23-30.el6_4.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_4.x86_64.rpm
samba-swat-3.6.23-30.el6_4.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_4.i686.rpm
samba-winbind-devel-3.6.23-30.el6_4.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_4.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source:
samba-3.6.23-30.el6_5.src.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_5.i686.rpm
libsmbclient-devel-3.6.23-30.el6_5.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_5.i686.rpm
samba-debuginfo-3.6.23-30.el6_5.x86_64.rpm
samba-doc-3.6.23-30.el6_5.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_5.x86_64.rpm
samba-swat-3.6.23-30.el6_5.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_5.i686.rpm
samba-winbind-devel-3.6.23-30.el6_5.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_5.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 6.6):
i386:
libsmbclient-devel-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-doc-3.6.23-30.el6_6.i686.rpm
samba-domainjoin-gui-3.6.23-30.el6_6.i686.rpm
samba-swat-3.6.23-30.el6_6.i686.rpm
samba-winbind-devel-3.6.23-30.el6_6.i686.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_6.i686.rpm
ppc64:
libsmbclient-devel-3.6.23-30.el6_6.ppc.rpm
libsmbclient-devel-3.6.23-30.el6_6.ppc64.rpm
samba-debuginfo-3.6.23-30.el6_6.ppc.rpm
samba-debuginfo-3.6.23-30.el6_6.ppc64.rpm
samba-doc-3.6.23-30.el6_6.ppc64.rpm
samba-domainjoin-gui-3.6.23-30.el6_6.ppc64.rpm
samba-swat-3.6.23-30.el6_6.ppc64.rpm
samba-winbind-devel-3.6.23-30.el6_6.ppc.rpm
samba-winbind-devel-3.6.23-30.el6_6.ppc64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_6.ppc64.rpm
s390x:
libsmbclient-devel-3.6.23-30.el6_6.s390.rpm
libsmbclient-devel-3.6.23-30.el6_6.s390x.rpm
samba-debuginfo-3.6.23-30.el6_6.s390.rpm
samba-debuginfo-3.6.23-30.el6_6.s390x.rpm
samba-doc-3.6.23-30.el6_6.s390x.rpm
samba-domainjoin-gui-3.6.23-30.el6_6.s390x.rpm
samba-swat-3.6.23-30.el6_6.s390x.rpm
samba-winbind-devel-3.6.23-30.el6_6.s390.rpm
samba-winbind-devel-3.6.23-30.el6_6.s390x.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_6.s390x.rpm
x86_64:
libsmbclient-devel-3.6.23-30.el6_6.i686.rpm
libsmbclient-devel-3.6.23-30.el6_6.x86_64.rpm
samba-debuginfo-3.6.23-30.el6_6.i686.rpm
samba-debuginfo-3.6.23-30.el6_6.x86_64.rpm
samba-doc-3.6.23-30.el6_6.x86_64.rpm
samba-domainjoin-gui-3.6.23-30.el6_6.x86_64.rpm
samba-glusterfs-3.6.23-30.el6_6.x86_64.rpm
samba-swat-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-devel-3.6.23-30.el6_6.i686.rpm
samba-winbind-devel-3.6.23-30.el6_6.x86_64.rpm
samba-winbind-krb5-locator-3.6.23-30.el6_6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2015-5370
https://access.redhat.com/security/cve/CVE-2016-2110
https://access.redhat.com/security/cve/CVE-2016-2111
https://access.redhat.com/security/cve/CVE-2016-2112
https://access.redhat.com/security/cve/CVE-2016-2115
https://access.redhat.com/security/cve/CVE-2016-2118
https://access.redhat.com/security/updates/classification/#critical
https://access.redhat.com/security/vulnerabilities/badlock
https://access.redhat.com/articles/2253041
http://badlock.org/
https://access.redhat.com/articles/2243351
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: samba security update
Advisory ID: RHSA-2016:0621-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0621.html
Issue date: 2016-04-12
CVE Names: CVE-2016-2110 CVE-2016-2111 CVE-2016-2112
CVE-2016-2115 CVE-2016-2118
=====================================================================
1. Summary:
An update for samba is now available for Red Hat Enterprise Linux 5.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, x86_64
3. Description:
Samba is an open-source implementation of the Server Message Block (SMB)
protocol and the related Common Internet File System (CIFS) protocol, which
allow PC-compatible machines to share files, printers, and various
information.
Security Fix(es):
* A protocol flaw, publicly referred to as Badlock, was found in the
Security Account Manager Remote Protocol (MS-SAMR) and the Local Security
Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated
DCE/RPC connection that a client initiates against a server could be used
by a man-in-the-middle attacker to impersonate the authenticated user
against the SAMR or LSA service on the server. As a result, the attacker
would be able to get read/write access to the Security Account Manager
database, and use this to reveal all passwords or any other potentially
sensitive information in that database. (CVE-2016-2118)
* Several flaws were found in Samba's implementation of NTLMSSP
authentication. An unauthenticated, man-in-the-middle attacker could use
this flaw to clear the encryption and integrity flags of a connection,
causing data to be transmitted in plain text. The attacker could also force
the client or server into sending data in plain text even if encryption was
explicitly requested for that connection. (CVE-2016-2110)
* It was discovered that Samba configured as a Domain Controller would
establish a secure communication channel with a machine using a spoofed
computer name. A remote attacker able to observe network traffic could use
this flaw to obtain session-related information about the spoofed machine.
(CVE-2016-2111)
* It was found that Samba's LDAP implementation did not enforce integrity
protection for LDAP connections. A man-in-the-middle attacker could use
this flaw to downgrade LDAP connections to use no integrity protection,
allowing them to hijack such connections. (CVE-2016-2112)
* It was found that Samba did not enable integrity protection for IPC
traffic by default. A man-in-the-middle attacker could use this flaw to
view and modify the data sent between a Samba server and a client.
(CVE-2016-2115)
Red Hat would like to thank the Samba project for reporting these issues.
Upstream acknowledges Stefan Metzmacher (SerNet) as the original reporter
of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, and CVE-2016-2115.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the smb service will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1311893 - CVE-2016-2110 samba: Man-in-the-middle attacks possible with NTLMSSP authentication
1311902 - CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
1311903 - CVE-2016-2112 samba: Missing downgrade detection
1312084 - CVE-2016-2115 samba: Smb signing not required by default when smb client connection is used for ipc usage
1317990 - CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
samba-3.0.33-3.41.el5_11.src.rpm
i386:
libsmbclient-3.0.33-3.41.el5_11.i386.rpm
samba-3.0.33-3.41.el5_11.i386.rpm
samba-client-3.0.33-3.41.el5_11.i386.rpm
samba-common-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
samba-swat-3.0.33-3.41.el5_11.i386.rpm
x86_64:
libsmbclient-3.0.33-3.41.el5_11.i386.rpm
libsmbclient-3.0.33-3.41.el5_11.x86_64.rpm
samba-3.0.33-3.41.el5_11.x86_64.rpm
samba-client-3.0.33-3.41.el5_11.x86_64.rpm
samba-common-3.0.33-3.41.el5_11.i386.rpm
samba-common-3.0.33-3.41.el5_11.x86_64.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.x86_64.rpm
samba-swat-3.0.33-3.41.el5_11.x86_64.rpm
Red Hat Enterprise Linux Desktop Workstation (v. 5 client):
Source:
samba-3.0.33-3.41.el5_11.src.rpm
i386:
libsmbclient-devel-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
x86_64:
libsmbclient-devel-3.0.33-3.41.el5_11.i386.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.x86_64.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
samba-3.0.33-3.41.el5_11.src.rpm
i386:
libsmbclient-3.0.33-3.41.el5_11.i386.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.i386.rpm
samba-3.0.33-3.41.el5_11.i386.rpm
samba-client-3.0.33-3.41.el5_11.i386.rpm
samba-common-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
samba-swat-3.0.33-3.41.el5_11.i386.rpm
ia64:
libsmbclient-3.0.33-3.41.el5_11.ia64.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.ia64.rpm
samba-3.0.33-3.41.el5_11.ia64.rpm
samba-client-3.0.33-3.41.el5_11.ia64.rpm
samba-common-3.0.33-3.41.el5_11.ia64.rpm
samba-debuginfo-3.0.33-3.41.el5_11.ia64.rpm
samba-swat-3.0.33-3.41.el5_11.ia64.rpm
ppc:
libsmbclient-3.0.33-3.41.el5_11.ppc.rpm
libsmbclient-3.0.33-3.41.el5_11.ppc64.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.ppc.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.ppc64.rpm
samba-3.0.33-3.41.el5_11.ppc.rpm
samba-client-3.0.33-3.41.el5_11.ppc.rpm
samba-common-3.0.33-3.41.el5_11.ppc.rpm
samba-common-3.0.33-3.41.el5_11.ppc64.rpm
samba-debuginfo-3.0.33-3.41.el5_11.ppc.rpm
samba-debuginfo-3.0.33-3.41.el5_11.ppc64.rpm
samba-swat-3.0.33-3.41.el5_11.ppc.rpm
s390x:
libsmbclient-3.0.33-3.41.el5_11.s390.rpm
libsmbclient-3.0.33-3.41.el5_11.s390x.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.s390.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.s390x.rpm
samba-3.0.33-3.41.el5_11.s390x.rpm
samba-client-3.0.33-3.41.el5_11.s390x.rpm
samba-common-3.0.33-3.41.el5_11.s390.rpm
samba-common-3.0.33-3.41.el5_11.s390x.rpm
samba-debuginfo-3.0.33-3.41.el5_11.s390.rpm
samba-debuginfo-3.0.33-3.41.el5_11.s390x.rpm
samba-swat-3.0.33-3.41.el5_11.s390x.rpm
x86_64:
libsmbclient-3.0.33-3.41.el5_11.i386.rpm
libsmbclient-3.0.33-3.41.el5_11.x86_64.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.i386.rpm
libsmbclient-devel-3.0.33-3.41.el5_11.x86_64.rpm
samba-3.0.33-3.41.el5_11.x86_64.rpm
samba-client-3.0.33-3.41.el5_11.x86_64.rpm
samba-common-3.0.33-3.41.el5_11.i386.rpm
samba-common-3.0.33-3.41.el5_11.x86_64.rpm
samba-debuginfo-3.0.33-3.41.el5_11.i386.rpm
samba-debuginfo-3.0.33-3.41.el5_11.x86_64.rpm
samba-swat-3.0.33-3.41.el5_11.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-2110
https://access.redhat.com/security/cve/CVE-2016-2111
https://access.redhat.com/security/cve/CVE-2016-2112
https://access.redhat.com/security/cve/CVE-2016-2115
https://access.redhat.com/security/cve/CVE-2016-2118
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/badlock
https://access.redhat.com/articles/2253041
http://badlock.org/
https://access.redhat.com/articles/2243351
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: samba security update
Advisory ID: RHSA-2016:0623-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0623.html
Issue date: 2016-04-12
CVE Names: CVE-2015-5370 CVE-2016-2110 CVE-2016-2111
CVE-2016-2112 CVE-2016-2115 CVE-2016-2118
=====================================================================
1. Summary:
An update for samba is now available for Red Hat Enterprise Linux 5.6 Long
Life and Red Hat Enterprise Linux 5.9 Long Life.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Long Life (v. 5.6 server) - i386, ia64, x86_64
Red Hat Enterprise Linux Long Life (v. 5.9 server) - i386, ia64, ppc, s390x, x86_64
3. Description:
Samba is an open-source implementation of the Server Message Block (SMB)
protocol and the related Common Internet File System (CIFS) protocol, which
allow PC-compatible machines to share files, printers, and various
information.
Security Fix(es):
* Multiple flaws were found in Samba's DCE/RPC protocol implementation. A
remote, authenticated attacker could use these flaws to cause a denial of
service against the Samba server (high CPU load or a crash) or, possibly,
execute arbitrary code with the permissions of the user running Samba
(root). This flaw could also be used to downgrade a secure DCE/RPC
connection by a man-in-the-middle attacker taking control of an Active
Directory (AD) object and compromising the security of a Samba Active
Directory Domain Controller (DC). (CVE-2015-5370)
Note: While Samba packages as shipped in Red Hat Enterprise Linux do not
support running Samba as an AD DC, this flaw applies to all roles Samba
implements.
* A protocol flaw, publicly referred to as Badlock, was found in the
Security Account Manager Remote Protocol (MS-SAMR) and the Local Security
Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated
DCE/RPC connection that a client initiates against a server could be used
by a man-in-the-middle attacker to impersonate the authenticated user
against the SAMR or LSA service on the server. As a result, the attacker
would be able to get read/write access to the Security Account Manager
database, and use this to reveal all passwords or any other potentially
sensitive information in that database. (CVE-2016-2118)
* Several flaws were found in Samba's implementation of NTLMSSP
authentication. An unauthenticated, man-in-the-middle attacker could use
this flaw to clear the encryption and integrity flags of a connection,
causing data to be transmitted in plain text. The attacker could also force
the client or server into sending data in plain text even if encryption was
explicitly requested for that connection. (CVE-2016-2110)
* It was discovered that Samba configured as a Domain Controller would
establish a secure communication channel with a machine using a spoofed
computer name. A remote attacker able to observe network traffic could use
this flaw to obtain session-related information about the spoofed machine.
(CVE-2016-2111)
* It was found that Samba's LDAP implementation did not enforce integrity
protection for LDAP connections. A man-in-the-middle attacker could use
this flaw to downgrade LDAP connections to use no integrity protection,
allowing them to hijack such connections. (CVE-2016-2112)
* It was found that Samba did not enable integrity protection for IPC
traffic by default. A man-in-the-middle attacker could use this flaw to
view and modify the data sent between a Samba server and a client.
(CVE-2016-2115)
Red Hat would like to thank the Samba project for reporting these issues.
Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter
of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter
of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, and CVE-2016-2115.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the smb service will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1309987 - CVE-2015-5370 samba: crash in dcesrv_auth_bind_ack due to missing error check
1311893 - CVE-2016-2110 samba: Man-in-the-middle attacks possible with NTLMSSP authentication
1311902 - CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
1311903 - CVE-2016-2112 samba: Missing downgrade detection
1312084 - CVE-2016-2115 samba: Smb signing not required by default when smb client connection is used for ipc usage
1317990 - CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
6. Package List:
Red Hat Enterprise Linux Long Life (v. 5.6 server):
Source:
samba-3.0.33-3.30.el5_6.src.rpm
i386:
libsmbclient-3.0.33-3.30.el5_6.i386.rpm
libsmbclient-devel-3.0.33-3.30.el5_6.i386.rpm
samba-3.0.33-3.30.el5_6.i386.rpm
samba-client-3.0.33-3.30.el5_6.i386.rpm
samba-common-3.0.33-3.30.el5_6.i386.rpm
samba-debuginfo-3.0.33-3.30.el5_6.i386.rpm
samba-swat-3.0.33-3.30.el5_6.i386.rpm
ia64:
libsmbclient-3.0.33-3.30.el5_6.ia64.rpm
libsmbclient-devel-3.0.33-3.30.el5_6.ia64.rpm
samba-3.0.33-3.30.el5_6.ia64.rpm
samba-client-3.0.33-3.30.el5_6.ia64.rpm
samba-common-3.0.33-3.30.el5_6.ia64.rpm
samba-debuginfo-3.0.33-3.30.el5_6.ia64.rpm
samba-swat-3.0.33-3.30.el5_6.ia64.rpm
x86_64:
libsmbclient-3.0.33-3.30.el5_6.i386.rpm
libsmbclient-3.0.33-3.30.el5_6.x86_64.rpm
libsmbclient-devel-3.0.33-3.30.el5_6.i386.rpm
libsmbclient-devel-3.0.33-3.30.el5_6.x86_64.rpm
samba-3.0.33-3.30.el5_6.x86_64.rpm
samba-client-3.0.33-3.30.el5_6.x86_64.rpm
samba-common-3.0.33-3.30.el5_6.i386.rpm
samba-common-3.0.33-3.30.el5_6.x86_64.rpm
samba-debuginfo-3.0.33-3.30.el5_6.i386.rpm
samba-debuginfo-3.0.33-3.30.el5_6.x86_64.rpm
samba-swat-3.0.33-3.30.el5_6.x86_64.rpm
Red Hat Enterprise Linux Long Life (v. 5.9 server):
Source:
samba-3.0.33-3.40.el5_9.src.rpm
i386:
libsmbclient-3.0.33-3.40.el5_9.i386.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.i386.rpm
samba-3.0.33-3.40.el5_9.i386.rpm
samba-client-3.0.33-3.40.el5_9.i386.rpm
samba-common-3.0.33-3.40.el5_9.i386.rpm
samba-debuginfo-3.0.33-3.40.el5_9.i386.rpm
samba-swat-3.0.33-3.40.el5_9.i386.rpm
ia64:
libsmbclient-3.0.33-3.40.el5_9.ia64.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.ia64.rpm
samba-3.0.33-3.40.el5_9.ia64.rpm
samba-client-3.0.33-3.40.el5_9.ia64.rpm
samba-common-3.0.33-3.40.el5_9.ia64.rpm
samba-debuginfo-3.0.33-3.40.el5_9.ia64.rpm
samba-swat-3.0.33-3.40.el5_9.ia64.rpm
ppc:
libsmbclient-3.0.33-3.40.el5_9.ppc.rpm
libsmbclient-3.0.33-3.40.el5_9.ppc64.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.ppc.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.ppc64.rpm
samba-3.0.33-3.40.el5_9.ppc.rpm
samba-client-3.0.33-3.40.el5_9.ppc.rpm
samba-common-3.0.33-3.40.el5_9.ppc.rpm
samba-common-3.0.33-3.40.el5_9.ppc64.rpm
samba-debuginfo-3.0.33-3.40.el5_9.ppc.rpm
samba-debuginfo-3.0.33-3.40.el5_9.ppc64.rpm
samba-swat-3.0.33-3.40.el5_9.ppc.rpm
s390x:
libsmbclient-3.0.33-3.40.el5_9.s390.rpm
libsmbclient-3.0.33-3.40.el5_9.s390x.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.s390.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.s390x.rpm
samba-3.0.33-3.40.el5_9.s390x.rpm
samba-client-3.0.33-3.40.el5_9.s390x.rpm
samba-common-3.0.33-3.40.el5_9.s390.rpm
samba-common-3.0.33-3.40.el5_9.s390x.rpm
samba-debuginfo-3.0.33-3.40.el5_9.s390.rpm
samba-debuginfo-3.0.33-3.40.el5_9.s390x.rpm
samba-swat-3.0.33-3.40.el5_9.s390x.rpm
x86_64:
libsmbclient-3.0.33-3.40.el5_9.i386.rpm
libsmbclient-3.0.33-3.40.el5_9.x86_64.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.i386.rpm
libsmbclient-devel-3.0.33-3.40.el5_9.x86_64.rpm
samba-3.0.33-3.40.el5_9.x86_64.rpm
samba-client-3.0.33-3.40.el5_9.x86_64.rpm
samba-common-3.0.33-3.40.el5_9.i386.rpm
samba-common-3.0.33-3.40.el5_9.x86_64.rpm
samba-debuginfo-3.0.33-3.40.el5_9.i386.rpm
samba-debuginfo-3.0.33-3.40.el5_9.x86_64.rpm
samba-swat-3.0.33-3.40.el5_9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2015-5370
https://access.redhat.com/security/cve/CVE-2016-2110
https://access.redhat.com/security/cve/CVE-2016-2111
https://access.redhat.com/security/cve/CVE-2016-2112
https://access.redhat.com/security/cve/CVE-2016-2115
https://access.redhat.com/security/cve/CVE-2016-2118
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/badlock
https://access.redhat.com/articles/2253041
http://badlock.org/
https://access.redhat.com/articles/2243351
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: samba security update
Advisory ID: RHSA-2016:0625-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0625.html
Issue date: 2016-04-12
CVE Names: CVE-2016-2110 CVE-2016-2111 CVE-2016-2112
CVE-2016-2115 CVE-2016-2118
=====================================================================
1. Summary:
An update for samba is now available for Red Hat Enterprise Linux 4
Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AS (v. 4 ELS) - i386, ia64, x86_64
Red Hat Enterprise Linux ES (v. 4 ELS) - i386, x86_64
3. Description:
Samba is an open-source implementation of the Server Message Block (SMB)
protocol and the related Common Internet File System (CIFS) protocol, which
allow PC-compatible machines to share files, printers, and various
information.
Security Fix(es):
* A protocol flaw, publicly referred to as Badlock, was found in the
Security Account Manager Remote Protocol (MS-SAMR) and the Local Security
Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated
DCE/RPC connection that a client initiates against a server could be used
by a man-in-the-middle attacker to impersonate the authenticated user
against the SAMR or LSA service on the server. As a result, the attacker
would be able to get read/write access to the Security Account Manager
database, and use this to reveal all passwords or any other potentially
sensitive information in that database. (CVE-2016-2118)
* Several flaws were found in Samba's implementation of NTLMSSP
authentication. An unauthenticated, man-in-the-middle attacker could use
this flaw to clear the encryption and integrity flags of a connection,
causing data to be transmitted in plain text. The attacker could also force
the client or server into sending data in plain text even if encryption was
explicitly requested for that connection. (CVE-2016-2110)
* It was discovered that Samba configured as a Domain Controller would
establish a secure communication channel with a machine using a spoofed
computer name. A remote attacker able to observe network traffic could use
this flaw to obtain session-related information about the spoofed machine.
(CVE-2016-2111)
* It was found that Samba's LDAP implementation did not enforce integrity
protection for LDAP connections. A man-in-the-middle attacker could use
this flaw to downgrade LDAP connections to use no integrity protection,
allowing them to hijack such connections. (CVE-2016-2112)
* It was found that Samba did not enable integrity protection for IPC
traffic by default. A man-in-the-middle attacker could use this flaw to
view and modify the data sent between a Samba server and a client.
(CVE-2016-2115)
Red Hat would like to thank the Samba project for reporting these issues.
Upstream acknowledges Stefan Metzmacher (SerNet) as the original reporter
of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, and CVE-2016-2115.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the smb service will be restarted
automatically.
5. Bugs fixed (https://bugzilla.redhat.com/):
1311893 - CVE-2016-2110 samba: Man-in-the-middle attacks possible with NTLMSSP authentication
1311902 - CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
1311903 - CVE-2016-2112 samba: Missing downgrade detection
1312084 - CVE-2016-2115 samba: Smb signing not required by default when smb client connection is used for ipc usage
1317990 - CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
6. Package List:
Red Hat Enterprise Linux AS (v. 4 ELS):
Source:
samba-3.0.33-3.37.el4.src.rpm
i386:
samba-3.0.33-3.37.el4.i386.rpm
samba-client-3.0.33-3.37.el4.i386.rpm
samba-common-3.0.33-3.37.el4.i386.rpm
samba-debuginfo-3.0.33-3.37.el4.i386.rpm
samba-swat-3.0.33-3.37.el4.i386.rpm
ia64:
samba-3.0.33-3.37.el4.ia64.rpm
samba-client-3.0.33-3.37.el4.ia64.rpm
samba-common-3.0.33-3.37.el4.i386.rpm
samba-common-3.0.33-3.37.el4.ia64.rpm
samba-debuginfo-3.0.33-3.37.el4.i386.rpm
samba-debuginfo-3.0.33-3.37.el4.ia64.rpm
samba-swat-3.0.33-3.37.el4.ia64.rpm
x86_64:
samba-3.0.33-3.37.el4.x86_64.rpm
samba-client-3.0.33-3.37.el4.x86_64.rpm
samba-common-3.0.33-3.37.el4.i386.rpm
samba-common-3.0.33-3.37.el4.x86_64.rpm
samba-debuginfo-3.0.33-3.37.el4.i386.rpm
samba-debuginfo-3.0.33-3.37.el4.x86_64.rpm
samba-swat-3.0.33-3.37.el4.x86_64.rpm
Red Hat Enterprise Linux ES (v. 4 ELS):
Source:
samba-3.0.33-3.37.el4.src.rpm
i386:
samba-3.0.33-3.37.el4.i386.rpm
samba-client-3.0.33-3.37.el4.i386.rpm
samba-common-3.0.33-3.37.el4.i386.rpm
samba-debuginfo-3.0.33-3.37.el4.i386.rpm
samba-swat-3.0.33-3.37.el4.i386.rpm
x86_64:
samba-3.0.33-3.37.el4.x86_64.rpm
samba-client-3.0.33-3.37.el4.x86_64.rpm
samba-common-3.0.33-3.37.el4.i386.rpm
samba-common-3.0.33-3.37.el4.x86_64.rpm
samba-debuginfo-3.0.33-3.37.el4.i386.rpm
samba-debuginfo-3.0.33-3.37.el4.x86_64.rpm
samba-swat-3.0.33-3.37.el4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-2110
https://access.redhat.com/security/cve/CVE-2016-2111
https://access.redhat.com/security/cve/CVE-2016-2112
https://access.redhat.com/security/cve/CVE-2016-2115
https://access.redhat.com/security/cve/CVE-2016-2118
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/badlock
https://access.redhat.com/articles/2253041
http://badlock.org/
https://access.redhat.com/articles/2243351
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
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