Moderate CentOS glibc Security Update


glibc-2.12-1.149.el6.i686.rpm, glibc-2.12-1.149.el6.src.rpm, glibc-2.12-1.149.el6.x86_64.rpm, glibc-common-2.12-1.149.el6.i686.rpm, glibc-common-2.12-1.149.el6.x86_64.rpm, glibc-devel-2.12-1.149.el6.i686.rpm, glibc-devel-2.12-1.149.el6.x86_64.rpm, glibc-headers-2.12-1.149.el6.i686.rpm, glibc-headers-2.12-1.149.el6.x86_64.rpm, glibc-static-2.12-1.149.el6.i686.rpm, glibc-static-2.12-1.149.el6.x86_64.rpm, glibc-utils-2.12-1.149.el6.i686.rpm, glibc-utils-2.12-1.149.el6.x86_64.rpm, nscd-2.12-1.149.el6.i686.rpm, nscd-2.12-1.149.el6.x86_64.rpm,
2018-01-18 11:08
2017-07-27 19:07
2017-04-01 19:08
2017-01-05 20:12


Updated glibc packages that fix two security issues, several bugs, and add
two enhancements are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

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.

An out-of-bounds write flaw was found in the way the glibc's readdir_r()
function handled file system entries longer than the NAME_MAX character
constant. A remote attacker could provide a specially crafted NTFS or CIFS
file system that, when processed by an application using readdir_r(), would
cause that application to crash or, potentially, allow the attacker to
execute arbitrary code with the privileges of the user running the
application. (CVE-2013-4237)

It was found that getaddrinfo() did not limit the amount of stack memory
used during name resolution. An attacker able to make an application
resolve an attacker-controlled hostname or IP address could possibly cause
the application to exhaust all stack memory and crash. (CVE-2013-4458)

These updated glibc packages also include several bug fixes and two
enhancements. Space precludes documenting all of these changes in this
advisory. Users are directed to the Red Hat Enterprise Linux 6.6 Technical
Notes, linked to in the References section, for information on the most
significant of these changes.

All glibc users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues and add these
Please see

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The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
6 glibc glibc-2.12-1.149.el6.src.rpm
glibc glibc-2.12-1.149.el6.i686.rpm
glibc glibc-2.12-1.149.el6.x86_64.rpm
glibc-common glibc-common-2.12-1.149.el6.x86_64.rpm
glibc-common glibc-common-2.12-1.149.el6.i686.rpm
glibc-devel glibc-devel-2.12-1.149.el6.i686.rpm
glibc-devel glibc-devel-2.12-1.149.el6.x86_64.rpm
glibc-headers glibc-headers-2.12-1.149.el6.x86_64.rpm
glibc-headers glibc-headers-2.12-1.149.el6.i686.rpm
glibc-static glibc-static-2.12-1.149.el6.i686.rpm
glibc-static glibc-static-2.12-1.149.el6.x86_64.rpm
glibc-utils glibc-utils-2.12-1.149.el6.x86_64.rpm
glibc-utils glibc-utils-2.12-1.149.el6.i686.rpm
nscd nscd-2.12-1.149.el6.x86_64.rpm
nscd nscd-2.12-1.149.el6.i686.rpm