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Test ID:1.3.6.1.4.1.25623.1.0.870722
Category:Red Hat Local Security Checks
Title:RedHat Update for glibc RHSA-2012:0058-01
Summary:The remote host is missing an update for the 'glibc'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'glibc'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The glibc packages contain the standard C libraries used by multiple
programs on the system. These packages contain the standard C and the
standard math libraries. Without these two libraries, a Linux system cannot
function properly.

An integer overflow flaw, leading to a heap-based buffer overflow, was
found in the way the glibc library read timezone files. If a
carefully-crafted timezone file was loaded by an application linked against
glibc, it could cause the application to crash or, potentially, execute
arbitrary code with the privileges of the user running the application.
(CVE-2009-5029)

A denial of service flaw was found in the remote procedure call (RPC)
implementation in glibc. A remote attacker able to open a large number of
connections to an RPC service that is using the RPC implementation from
glibc, could use this flaw to make that service use an excessive amount of
CPU time. (CVE-2011-4609)

This update also fixes the following bugs:

* glibc had incorrect information for numeric separators and groupings for
specific French, Spanish, and German locales. Therefore, applications
utilizing glibc's locale support printed numbers with the wrong separators
and groupings when those locales were in use. With this update, the
separator and grouping information has been fixed. (BZ#754116)

* The RHBA-2011:1179 glibc update introduced a regression, causing glibc to
incorrectly parse groups with more than 126 members, resulting in
applications such as 'id' failing to list all the groups a particular user
was a member of. With this update, group parsing has been fixed.
(BZ#766484)

* glibc incorrectly allocated too much memory due to a race condition
within its own malloc routines. This could cause a multi-threaded
application to allocate more memory than was expected. With this update,
the race condition has been fixed, and malloc's behavior is now consistent
with the documentation regarding the MALLOC_ARENA_TEST and MALLOC_ARENA_MAX
environment variables. (BZ#769594)

Users should upgrade to these updated packages, which contain backported
patches to resolve these issues.

Affected Software/OS:
glibc on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
6.8

CVSS Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2009-5029
http://lists.grok.org.uk/pipermail/full-disclosure/2011-December/084452.html
http://dividead.wordpress.com/2009/06/01/glibc-timezone-integer-overflow/
http://sourceware.org/git/?p=glibc.git;a=commit;h=97ac2654b2d831acaa18a2b018b0736245903fd2
http://sourceware.org/ml/libc-alpha/2011-12/msg00037.html
Common Vulnerability Exposure (CVE) ID: CVE-2011-4609
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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