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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.1038
Security Bulletin: Multiple vulnerabilities in Samba - including Badlock -
                Transformation Extender Hypervisor Edition
                               28 April 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Transformation Extender
Publisher:         IBM
Operating System:  Linux variants
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 

Reference:         ESB-2016.0968
                   ESB-2016.0960
                   ESB-2016.0951.2
                   ESB-2016.0947
                   ESB-2016.0946
                   ESB-2016.0940
                   ESB-2016.0934
                   ESB-2016.0933
                   ESB-2016.0932
                   ESB-2016.0931

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21981057

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Security Bulletin: Multiple vulnerabilities in Samba - including Badlock -
Transformation Extender Hypervisor Edition

Security Bulletin

Document information

More support for:

Transformation Extender

Hypervisor

Software version:

8.4.0.0, 8.4.0.1, 8.4.0.2, 8.4.0.3, 8.4.0.4, 8.4.0.5, 8.4.1.0, 8.4.1.1,
8.4.1.2, 8.4.1.3, 8.4.1.4, 9.0.0.0

Operating system(s):

Linux

Reference #:

1981057

Modified date:

2016-04-27

Summary

Samba vulnerabilities were disclosed on April 12, 2016. Samba is used by
Transformation Extender Hypervisor Edition. Transformation Extender
Hypervisor Edition has addressed the applicable CVEs including the
vulnerability commonly referred to as Badlock.

Vulnerability Details

CVEID:

CVE-2016-2118

DESCRIPTION:

Samba could allow a remote attacker to gain elevated privileges on the
system, caused by the acceptance of inadequate authentication levels by the
Microsoft Security Account Manager (SAM) and Local Security Authority (Domain
Policy) (LSAD) remote protocols. An attacker could exploit this vulnerability
using man-in-the-middle techniques to impersonate an authenticated user
against the SAMR or LSAD service and gain access to the Security Account
Manager (SAM) database. This vulnerability is also known as the BADLOCK bug.

CVSS Base Score: 7.1

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111935

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID:

CVE-2015-5370

DESCRIPTION:

Samba is vulnerable to a denial of service, caused by the improper validation
of DCE-RPC packets by the DCE-RPC client and server implementations. An
attacker could exploit this vulnerability using man-in-the-middle techniques
to downgrade a secure connection to an insecure one and consume an overly
large amount of CPU resources.

CVSS Base Score: 5.4

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111936

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L)

CVEID:

CVE-2016-2110

DESCRIPTION:

Samba could allow a remote attacker to bypass security restrictions, caused
by the failure to protect the feature negotiation of NTLMSSP from a
downgrade. A remote attacker could exploit this vulnerability using man-in-
the-middle techniques to clear NTLMSSP_NEGOTIATE_SIGN and
NTLMSSP_NEGOTIATE_SEAL flags and perform downgrade attacks.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111937

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

CVEID:

CVE-2016-2111

DESCRIPTION:

Samba could allow a remote attacker to conduct spoofing attacks, caused by an
error in the NETLOGON service when a Domain Controller is configured. By
logging into a domain joined system and observing network traffic, an
attacker could exploit this vulnerability using a specially crafted
application to connect to another domain joined system and access session-
related information of the spoofed computer.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111938

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

CVEID:

CVE-2016-2112

DESCRIPTION:

Samba could allow a remote attacker to bypass security restrictions, caused
by the failure to enforce integrity protection by the LDAP client and server.
A remote attacker could exploit this vulnerability using man-in-the-middle
techniques to downgrade LDAP connections.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111939

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

CVEID:

CVE-2016-2113

DESCRIPTION:

Samba could allow a remote attacker to bypass security restrictions, caused
by the failure to validate TLS certificates. A remote attacker could exploit
this vulnerability using man-in-the-middle techniques to perform unauthorized
actions.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111940

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

CVEID:

CVE-2016-2114

DESCRIPTION:

Samba could allow a remote attacker to bypass security restrictions, caused
by the failure to enforce required smb signing. A remote attacker could
exploit this vulnerability using man-in-the-middle techniques to perform
unauthorized actions.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111941

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

CVEID:

CVE-2016-2115

DESCRIPTION:

Samba could allow a remote attacker to bypass security restrictions, caused
by the failure to protect the integrity of SMB client connections for IPC
traffic. A remote attacker could exploit this vulnerability using man-in-the-
middle techniques to perform unauthorized actions.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/111942

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)

Affected Products and Versions

Transformation Extender Hypervisor Edition

Affected versions:

9.0.0.0

8.4.1.0 - 8.4.1.4

8.4.0.0 - 8.4.0.5

Remediation/Fixes

Transformation Extender Hypervisor Edition for AIX 9.0.0.0 users should
download and install the interim fix for APAR PI60549 from IBM Fix Central here.

Users on prior versions of WebSphere Transformation Extender with Launcher
Hypervisor Edition for AIX should download and install the interim fix for
APAR PI60549 from IBM Fix Central here.

Workarounds and Mitigations

None.

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References

Complete CVSS v3 Guide

On-line Calculator v3

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Change History

26 April 2016: Original version published.

*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact
of this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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