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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2495 Moderate: samba security update 5 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba Publisher: Red Hat Operating System: Red Hat Impact/Access: Access Privileged Data -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-12163 CVE-2017-12151 CVE-2017-12150 Reference: ESB-2017.2419 ESB-2017.2400 ESB-2017.2398 ESB-2017.2399.2 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:2858 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: samba security update Advisory ID: RHSA-2017:2858-01 Product: Red Hat Gluster Storage Advisory URL: https://access.redhat.com/errata/RHSA-2017:2858 Issue date: 2017-10-04 CVE Names: CVE-2017-12150 CVE-2017-12151 CVE-2017-12163 ===================================================================== 1. Summary: An update for samba is now available for Red Hat Gluster Storage 3.3 for RHEL 6 and Red Hat Gluster Storage 3.3 for RHEL 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Gluster 3.3 Samba on RHEL-6 - noarch, x86_64 Red Hat Gluster 3.3 Samba on RHEL-7 - noarch, 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): * It was found that samba did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text. (CVE-2017-12150) * A flaw was found in the way samba client used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack. (CVE-2017-12151) * An information leak flaw was found in the way SMB1 protocol was implemented by Samba. A malicious client could use this flaw to dump server memory contents to a file on the samba share or to a shared printer, though the exact area of server memory cannot be controlled by the attacker. (CVE-2017-12163) Red Hat would like to thank the Samba project for reporting CVE-2017-12150 and CVE-2017-12151 and Yihan Lian and Zhibin Hu (Qihoo 360 GearTeam), Stefan Metzmacher (SerNet), and Jeremy Allison (Google) for reporting CVE-2017-12163. Upstream acknowledges Stefan Metzmacher (SerNet) as the original reporter of CVE-2017-12150 and CVE-2017-12151. 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/): 1488197 - CVE-2017-12151 samba: SMB2 connections don't keep encryption across DFS redirects 1488400 - CVE-2017-12150 samba: Some code path don't enforce smb signing, when they should 1491206 - CVE-2017-12163 Samba: Server memory information leak over SMB1 6. Package List: Red Hat Gluster 3.3 Samba on RHEL-6: Source: samba-4.6.3-6.el6rhs.src.rpm noarch: samba-common-4.6.3-6.el6rhs.noarch.rpm samba-pidl-4.6.3-6.el6rhs.noarch.rpm x86_64: ctdb-4.6.3-6.el6rhs.x86_64.rpm ctdb-tests-4.6.3-6.el6rhs.x86_64.rpm libsmbclient-4.6.3-6.el6rhs.x86_64.rpm libsmbclient-devel-4.6.3-6.el6rhs.x86_64.rpm libwbclient-4.6.3-6.el6rhs.x86_64.rpm libwbclient-devel-4.6.3-6.el6rhs.x86_64.rpm samba-4.6.3-6.el6rhs.x86_64.rpm samba-client-4.6.3-6.el6rhs.x86_64.rpm samba-client-libs-4.6.3-6.el6rhs.x86_64.rpm samba-common-libs-4.6.3-6.el6rhs.x86_64.rpm samba-common-tools-4.6.3-6.el6rhs.x86_64.rpm samba-dc-4.6.3-6.el6rhs.x86_64.rpm samba-dc-libs-4.6.3-6.el6rhs.x86_64.rpm samba-debuginfo-4.6.3-6.el6rhs.x86_64.rpm samba-devel-4.6.3-6.el6rhs.x86_64.rpm samba-krb5-printing-4.6.3-6.el6rhs.x86_64.rpm samba-libs-4.6.3-6.el6rhs.x86_64.rpm samba-python-4.6.3-6.el6rhs.x86_64.rpm samba-test-4.6.3-6.el6rhs.x86_64.rpm samba-test-libs-4.6.3-6.el6rhs.x86_64.rpm samba-vfs-glusterfs-4.6.3-6.el6rhs.x86_64.rpm samba-winbind-4.6.3-6.el6rhs.x86_64.rpm samba-winbind-clients-4.6.3-6.el6rhs.x86_64.rpm samba-winbind-krb5-locator-4.6.3-6.el6rhs.x86_64.rpm samba-winbind-modules-4.6.3-6.el6rhs.x86_64.rpm Red Hat Gluster 3.3 Samba on RHEL-7: Source: samba-4.6.3-6.el7rhgs.src.rpm noarch: samba-common-4.6.3-6.el7rhgs.noarch.rpm samba-pidl-4.6.3-6.el7rhgs.noarch.rpm x86_64: ctdb-4.6.3-6.el7rhgs.x86_64.rpm ctdb-tests-4.6.3-6.el7rhgs.x86_64.rpm libsmbclient-4.6.3-6.el7rhgs.x86_64.rpm libsmbclient-devel-4.6.3-6.el7rhgs.x86_64.rpm libwbclient-4.6.3-6.el7rhgs.x86_64.rpm libwbclient-devel-4.6.3-6.el7rhgs.x86_64.rpm samba-4.6.3-6.el7rhgs.x86_64.rpm samba-client-4.6.3-6.el7rhgs.x86_64.rpm samba-client-libs-4.6.3-6.el7rhgs.x86_64.rpm samba-common-libs-4.6.3-6.el7rhgs.x86_64.rpm samba-common-tools-4.6.3-6.el7rhgs.x86_64.rpm samba-dc-4.6.3-6.el7rhgs.x86_64.rpm samba-dc-libs-4.6.3-6.el7rhgs.x86_64.rpm samba-debuginfo-4.6.3-6.el7rhgs.x86_64.rpm samba-devel-4.6.3-6.el7rhgs.x86_64.rpm samba-krb5-printing-4.6.3-6.el7rhgs.x86_64.rpm samba-libs-4.6.3-6.el7rhgs.x86_64.rpm samba-python-4.6.3-6.el7rhgs.x86_64.rpm samba-test-4.6.3-6.el7rhgs.x86_64.rpm samba-test-libs-4.6.3-6.el7rhgs.x86_64.rpm samba-vfs-glusterfs-4.6.3-6.el7rhgs.x86_64.rpm samba-winbind-4.6.3-6.el7rhgs.x86_64.rpm samba-winbind-clients-4.6.3-6.el7rhgs.x86_64.rpm samba-winbind-krb5-locator-4.6.3-6.el7rhgs.x86_64.rpm samba-winbind-modules-4.6.3-6.el7rhgs.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-2017-12150 https://access.redhat.com/security/cve/CVE-2017-12151 https://access.redhat.com/security/cve/CVE-2017-12163 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZ1Po2XlSAg2UNWIIRAoPSAJ42xRH1I9GQO6CopPCEppaUHo+PAgCeNE5H NB78s9xhTBatWoCW8Vazn98= =2J8W - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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