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Red Hat Security Advisory 2012-0397-01

Red Hat Security Advisory 2012-0397-01
Posted Mar 19, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0397-01 - The glibc packages provide the standard C and standard math libraries used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An integer overflow flaw was found in the implementation of the printf functions family. This could allow an attacker to bypass FORTIFY_SOURCE protections and execute arbitrary code using a format string flaw in an application, even though these protections are expected to limit the impact of such flaws to an application abort. All users of glibc are advised to upgrade to these updated packages, which contain a patch to resolve this issue.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2012-0864
MD5 | 0b1e438c26717b923003ac698aa0465d

Red Hat Security Advisory 2012-0397-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: glibc security update
Advisory ID: RHSA-2012:0397-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0397.html
Issue date: 2012-03-19
CVE Names: CVE-2012-0864
=====================================================================

1. Summary:

Updated glibc packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate
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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

3. Description:

The glibc packages provide the standard C and standard math libraries used
by multiple programs on the system. Without these libraries, the Linux
system cannot function correctly.

An integer overflow flaw was found in the implementation of the printf
functions family. This could allow an attacker to bypass FORTIFY_SOURCE
protections and execute arbitrary code using a format string flaw in an
application, even though these protections are expected to limit the impact
of such flaws to an application abort. (CVE-2012-0864)

All users of glibc are advised to upgrade to these updated packages, which
contain a patch to resolve this issue.

4. 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

5. Bugs fixed (http://bugzilla.redhat.com/):

794766 - CVE-2012-0864 glibc: FORTIFY_SOURCE format string protection bypass via "nargs" integer overflow

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/glibc-2.5-81.el5_8.1.src.rpm

i386:
glibc-2.5-81.el5_8.1.i386.rpm
glibc-2.5-81.el5_8.1.i686.rpm
glibc-common-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i686.rpm
glibc-debuginfo-common-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.i386.rpm
glibc-headers-2.5-81.el5_8.1.i386.rpm
glibc-utils-2.5-81.el5_8.1.i386.rpm
nscd-2.5-81.el5_8.1.i386.rpm

x86_64:
glibc-2.5-81.el5_8.1.i686.rpm
glibc-2.5-81.el5_8.1.x86_64.rpm
glibc-common-2.5-81.el5_8.1.x86_64.rpm
glibc-debuginfo-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i686.rpm
glibc-debuginfo-2.5-81.el5_8.1.x86_64.rpm
glibc-debuginfo-common-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.x86_64.rpm
glibc-headers-2.5-81.el5_8.1.x86_64.rpm
glibc-utils-2.5-81.el5_8.1.x86_64.rpm
nscd-2.5-81.el5_8.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/glibc-2.5-81.el5_8.1.src.rpm

i386:
glibc-2.5-81.el5_8.1.i386.rpm
glibc-2.5-81.el5_8.1.i686.rpm
glibc-common-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i686.rpm
glibc-debuginfo-common-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.i386.rpm
glibc-headers-2.5-81.el5_8.1.i386.rpm
glibc-utils-2.5-81.el5_8.1.i386.rpm
nscd-2.5-81.el5_8.1.i386.rpm

ia64:
glibc-2.5-81.el5_8.1.i686.rpm
glibc-2.5-81.el5_8.1.ia64.rpm
glibc-common-2.5-81.el5_8.1.ia64.rpm
glibc-debuginfo-2.5-81.el5_8.1.i686.rpm
glibc-debuginfo-2.5-81.el5_8.1.ia64.rpm
glibc-devel-2.5-81.el5_8.1.ia64.rpm
glibc-headers-2.5-81.el5_8.1.ia64.rpm
glibc-utils-2.5-81.el5_8.1.ia64.rpm
nscd-2.5-81.el5_8.1.ia64.rpm

ppc:
glibc-2.5-81.el5_8.1.ppc.rpm
glibc-2.5-81.el5_8.1.ppc64.rpm
glibc-common-2.5-81.el5_8.1.ppc.rpm
glibc-debuginfo-2.5-81.el5_8.1.ppc.rpm
glibc-debuginfo-2.5-81.el5_8.1.ppc64.rpm
glibc-devel-2.5-81.el5_8.1.ppc.rpm
glibc-devel-2.5-81.el5_8.1.ppc64.rpm
glibc-headers-2.5-81.el5_8.1.ppc.rpm
glibc-utils-2.5-81.el5_8.1.ppc.rpm
nscd-2.5-81.el5_8.1.ppc.rpm

s390x:
glibc-2.5-81.el5_8.1.s390.rpm
glibc-2.5-81.el5_8.1.s390x.rpm
glibc-common-2.5-81.el5_8.1.s390x.rpm
glibc-debuginfo-2.5-81.el5_8.1.s390.rpm
glibc-debuginfo-2.5-81.el5_8.1.s390x.rpm
glibc-devel-2.5-81.el5_8.1.s390.rpm
glibc-devel-2.5-81.el5_8.1.s390x.rpm
glibc-headers-2.5-81.el5_8.1.s390x.rpm
glibc-utils-2.5-81.el5_8.1.s390x.rpm
nscd-2.5-81.el5_8.1.s390x.rpm

x86_64:
glibc-2.5-81.el5_8.1.i686.rpm
glibc-2.5-81.el5_8.1.x86_64.rpm
glibc-common-2.5-81.el5_8.1.x86_64.rpm
glibc-debuginfo-2.5-81.el5_8.1.i386.rpm
glibc-debuginfo-2.5-81.el5_8.1.i686.rpm
glibc-debuginfo-2.5-81.el5_8.1.x86_64.rpm
glibc-debuginfo-common-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.i386.rpm
glibc-devel-2.5-81.el5_8.1.x86_64.rpm
glibc-headers-2.5-81.el5_8.1.x86_64.rpm
glibc-utils-2.5-81.el5_8.1.x86_64.rpm
nscd-2.5-81.el5_8.1.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/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-0864.html
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 2012 Red Hat, Inc.
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