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Red Hat 5 RHSA-2012:0397-01 Moderate: glibc Format String Flaw

red hat
Calendar Grey March 19, 2012
Scroller Redhat
The latest patch for Red Hat Enterprise Linux 5 addresses a vulnerability in glibc related to format string handling. Discover the implications of this moderate severity issue.
Updated glibc packages that fix one security issue are now available for Red Hat Enterprise Linux 5

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/articles/11258

Summary

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.

Topics%20covered

Topics Covered

security advisory security issue software patch moderate impact Red Hat Enterprise glibc update format string flaw

References

https://access.redhat.com/security/cve/CVE-2012-0864 https://access.redhat.com/security/updates/classification#moderate

Package List

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

Read the Full Advisory


Advisory ID: RHSA-2012:0397-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:0397.html
Issue date: 2012-03-19

Topic

Updated glibc packages that fix one security issue are now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory security issue software patch moderate impact Red Hat Enterprise glibc update format string flaw

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

Bugs Fixed

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

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