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CentOS: CESA-2023:2167-01 Moderate: Glibc Memory Handling Vulnerability

red hat
Calendar Grey October 8, 2013
Dist Redhat Esm H88
Newly released glibc updates address a vulnerability and a bug in Red Hat Enterprise Linux 5, assigned a moderate severity level.
Updated glibc packages that fix one security issue and one bug 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/site/articles/11258

Summary

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.
Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in glibc's memory allocator functions (pvalloc, valloc, and memalign). If an application used such a function, it could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2013-4332)
This update also fixes the following bug:
* Prior to this update, the size of the L3 cache in certain CPUs for SMP (Symmetric Multiprocessing) servers was not correctly detected. The incorrect cache size detection resulted in less than optimal performance for routines that used this information, including the memset() function. To fix this bug, the cache size detection has been corrected and core routines including memset() have their performance restored to expected levels. (BZ#1011424)
All glibc users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory moderate Red Hat buffer overflow risk glibc update memory allocator

References

https://access.redhat.com/security/cve/CVE-2013-4332 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: glibc-2.5-118.el5_10.2.i386.rpm glibc-2.5-118.el5_10.2.i686.rpm glibc-common-2.5-118.el5_10.2.i386.rpm glibc-debuginfo-2.5-118.el5_10.2.i386.rpm glibc-debuginfo-2.5-118.el5_10.2.i686.rpm glibc-debuginfo-common-2.5-118.el5_10.2.i386.rpm glibc-devel-2.5-118.el5_10.2.i386.rpm glibc-headers-2.5-118.el5_10.2.i386.rpm glibc-utils-2.5-118.el5_10.2.i386.rpm nscd-2.5-118.el5_10.2.i386.rpm
x86_64: glibc-2.5-118.el5_10.2.i686.rpm glibc-2.5-118.el5_10.2.x86_64.rpm glibc-common-2.5-118.el5_10.2.x86_64.rpm glibc-debuginfo-2.5-118.el5_10.2.i386.rpm glibc-debuginfo-2.5-118.el5_10.2.i686.rpm glibc-debuginfo-2.5-118.el5_10.2.x86_64.rpm glibc-debuginfo-common-2.5-118.el5_10.2.i386.rpm glibc-devel-2.5-118.el5_10.2.i386.rpm glibc-devel-2.5-118.el5_10.2.x86_64.rpm glibc-headers-2.5-118.el5_10.2.x86_64.rpm glibc-utils-2.5-118.el5_10.2.x86_64.rpm nscd-2.5-118.el5_10.2.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: glibc-2.5-118.el5_10.2.i386.rpm glibc-2.5-118.el5_10.2.i686.rpm glibc-common-2.5-118.el5_10.2.i386.rpm glibc-debuginfo-2.5-118.el5_10.2.i386.rpm glibc-debuginfo-2.5-118.el5_10.2.i686.rpm glibc-debuginfo-common-2.5-118.el5_10.2.i386.rpm glibc-devel-2.5-118.el5_10.2.i386.rpm

Read the Full Advisory


Advisory ID: RHSA-2013:1411-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1411.html
Issue date: 2013-10-08

Topic

Updated glibc packages that fix one security issue and one bug are nowavailable for Red 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 moderate Red Hat buffer overflow risk glibc update memory allocator

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

1007545 - CVE-2013-4332 glibc: three integer overflows in memory allocator

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