Synopsis
Important: samba and samba3x security update
Type/Severity
Security Advisory: Important
Topic
Updated samba3x and samba packages that fix one security issue are now
available for Red Hat Enterprise Linux 5 and 6 respectively.
The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.
Description
Samba is an open-source implementation of the Server Message Block (SMB) or
Common Internet File System (CIFS) protocol, which allows PC-compatible
machines to share files, printers, and other information.
A flaw was found in the way Samba handled certain Local Security Authority
(LSA) Remote Procedure Calls (RPC). An authenticated user could use this
flaw to issue an RPC call that would modify the privileges database on the
Samba server, allowing them to steal the ownership of files and directories
that are being shared by the Samba server, and create, delete, and modify
user accounts, as well as other Samba server administration tasks.
(CVE-2012-2111)
Red Hat would like to thank the Samba project for reporting this issue.
Upstream acknowledges Ivano Cristofolini as the original reporter.
Users of Samba are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing this
update, the smb service will be restarted automatically.
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
Affected Products
-
Red Hat Enterprise Linux Server 6 x86_64
-
Red Hat Enterprise Linux Server 6 i386
-
Red Hat Enterprise Linux Server 5 x86_64
-
Red Hat Enterprise Linux Server 5 ia64
-
Red Hat Enterprise Linux Server 5 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 6.2 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 6.2 i386
-
Red Hat Enterprise Linux Workstation 6 x86_64
-
Red Hat Enterprise Linux Workstation 6 i386
-
Red Hat Enterprise Linux Workstation 5 x86_64
-
Red Hat Enterprise Linux Workstation 5 i386
-
Red Hat Enterprise Linux Desktop 6 x86_64
-
Red Hat Enterprise Linux Desktop 6 i386
-
Red Hat Enterprise Linux Desktop 5 x86_64
-
Red Hat Enterprise Linux Desktop 5 i386
-
Red Hat Enterprise Linux for IBM z Systems 6 s390x
-
Red Hat Enterprise Linux for IBM z Systems 5 s390x
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.2 s390x
-
Red Hat Enterprise Linux for Power, big endian 6 ppc64
-
Red Hat Enterprise Linux for Power, big endian 5 ppc
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.2 ppc64
-
Red Hat Enterprise Linux for Scientific Computing 6 x86_64
-
Red Hat Enterprise Linux Server from RHUI 6 x86_64
-
Red Hat Enterprise Linux Server from RHUI 6 i386
-
Red Hat Enterprise Linux Server from RHUI 5 x86_64
-
Red Hat Enterprise Linux Server from RHUI 5 i386
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 i386
-
Red Hat Storage 2.0 x86_64
-
Red Hat Gluster Storage Server for On-premise 2.0 x86_64
-
Red Hat Storage for Public Cloud (via RHUI) 2.0 x86_64
-
Red Hat Enterprise Linux Server - AUS 6.2 x86_64
Fixes
- BZ - 813569 - CVE-2012-2111 samba: Incorrect permission checks when granting/removing privileges
CVEs
References
Vulmon