Synopsis
Critical: samba security update
Type/Severity
Security Advisory: Critical
Topic
Updated samba packages that fix one security issue are now available for
Red Hat Enterprise Linux 4 and 5, and Red Hat Enterprise Linux 5.3 Long
Life, and 5.6 Extended Update Support.
The Red Hat Security Response Team has rated this update as having critical
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 a suite of programs used by machines to share files, printers, and
other information.
An input validation flaw was found in the way Samba handled Any Batched
(AndX) requests. A remote, unauthenticated attacker could send a
specially-crafted SMB packet to the Samba server, possibly resulting in
arbitrary code execution with the privileges of the Samba server (root).
(CVE-2012-0870)
Red Hat would like to thank the Samba team for reporting this issue.
Upstream acknowledges Andy Davis of NGS Secure 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 5 x86_64
-
Red Hat Enterprise Linux Server 5 ia64
-
Red Hat Enterprise Linux Server 5 i386
-
Red Hat Enterprise Linux Server 4 x86_64
-
Red Hat Enterprise Linux Server 4 ia64
-
Red Hat Enterprise Linux Server 4 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 5.6 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.6 ia64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.6 i386
-
Red Hat Enterprise Linux Server - AUS 5.6 ia64
-
Red Hat Enterprise Linux Server - AUS 5.6 i386
-
Red Hat Enterprise Linux Server - AUS 5.3 x86_64
-
Red Hat Enterprise Linux Server - AUS 5.3 ia64
-
Red Hat Enterprise Linux Server - AUS 5.3 i386
-
Red Hat Enterprise Linux Workstation 5 x86_64
-
Red Hat Enterprise Linux Workstation 5 i386
-
Red Hat Enterprise Linux Workstation 4 x86_64
-
Red Hat Enterprise Linux Workstation 4 ia64
-
Red Hat Enterprise Linux Workstation 4 i386
-
Red Hat Enterprise Linux Desktop 5 x86_64
-
Red Hat Enterprise Linux Desktop 5 i386
-
Red Hat Enterprise Linux Desktop 4 x86_64
-
Red Hat Enterprise Linux Desktop 4 i386
-
Red Hat Enterprise Linux for IBM z Systems 5 s390x
-
Red Hat Enterprise Linux for IBM z Systems 4 s390x
-
Red Hat Enterprise Linux for IBM z Systems 4 s390
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.6 s390x
-
Red Hat Enterprise Linux for Power, big endian 5 ppc
-
Red Hat Enterprise Linux for Power, big endian 4 ppc
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.6 ppc
-
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 5.6 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.6 i386
-
Red Hat Enterprise Linux Server - AUS 5.6 x86_64
Fixes
- BZ - 795509 - CVE-2012-0870 samba: Any Batched ("AndX") request processing infinite recursion and heap-based buffer overflow
CVEs
References
Vulmon