Red Hat: 2012:1098-01: glibc: Moderate Advisory
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 properly.
Multiple errors in glibc's formatted printing functionality 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-2012-3404, CVE-2012-3405, CVE-2012-3406)
This update also fixes the following bug:
* A programming error caused an internal array of nameservers to be only
partially initialized when the /etc/resolv.conf file contained IPv6
nameservers. Depending on the contents of a nearby structure, this could
cause certain applications to terminate unexpectedly with a segmentation
fault. The programming error has been fixed, which restores proper behavior
with IPv6 nameservers listed in the /etc/resolv.conf file. (BZ#837026)
All users of glibc are advised to upgrade to these updated packages, which
contain backported patches to fix these issues.
Summary
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
References
https://www.redhat.com/security/data/cve/CVE-2012-3404.html https://www.redhat.com/security/data/cve/CVE-2012-3405.html https://www.redhat.com/security/data/cve/CVE-2012-3406.html https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-headers-2.12-1.80.el6_3.3.i686.rpm
glibc-utils-2.12-1.80.el6_3.3.i686.rpm
nscd-2.12-1.80.el6_3.3.i686.rpm
x86_64:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-2.12-1.80.el6_3.3.x86_64.rpm
glibc-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.x86_64.rpm
glibc-headers-2.12-1.80.el6_3.3.x86_64.rpm
glibc-utils-2.12-1.80.el6_3.3.x86_64.rpm
nscd-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
x86_64:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-2.12-1.80.el6_3.3.x86_64.rpm
glibc-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.x86_64.rpm
glibc-headers-2.12-1.80.el6_3.3.x86_64.rpm
glibc-utils-2.12-1.80.el6_3.3.x86_64.rpm
nscd-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-headers-2.12-1.80.el6_3.3.i686.rpm
glibc-utils-2.12-1.80.el6_3.3.i686.rpm
nscd-2.12-1.80.el6_3.3.i686.rpm
ppc64:
glibc-2.12-1.80.el6_3.3.ppc.rpm
glibc-2.12-1.80.el6_3.3.ppc64.rpm
glibc-common-2.12-1.80.el6_3.3.ppc64.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.ppc.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.ppc64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.ppc.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.ppc64.rpm
glibc-devel-2.12-1.80.el6_3.3.ppc.rpm
glibc-devel-2.12-1.80.el6_3.3.ppc64.rpm
glibc-headers-2.12-1.80.el6_3.3.ppc64.rpm
glibc-utils-2.12-1.80.el6_3.3.ppc64.rpm
nscd-2.12-1.80.el6_3.3.ppc64.rpm
s390x:
glibc-2.12-1.80.el6_3.3.s390.rpm
glibc-2.12-1.80.el6_3.3.s390x.rpm
glibc-common-2.12-1.80.el6_3.3.s390x.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.s390.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.s390x.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.s390.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.s390x.rpm
glibc-devel-2.12-1.80.el6_3.3.s390.rpm
glibc-devel-2.12-1.80.el6_3.3.s390x.rpm
glibc-headers-2.12-1.80.el6_3.3.s390x.rpm
glibc-utils-2.12-1.80.el6_3.3.s390x.rpm
nscd-2.12-1.80.el6_3.3.s390x.rpm
x86_64:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-2.12-1.80.el6_3.3.x86_64.rpm
glibc-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.x86_64.rpm
glibc-headers-2.12-1.80.el6_3.3.x86_64.rpm
glibc-utils-2.12-1.80.el6_3.3.x86_64.rpm
nscd-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
i386:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
ppc64:
glibc-debuginfo-2.12-1.80.el6_3.3.ppc.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.ppc64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.ppc.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.ppc64.rpm
glibc-static-2.12-1.80.el6_3.3.ppc.rpm
glibc-static-2.12-1.80.el6_3.3.ppc64.rpm
s390x:
glibc-debuginfo-2.12-1.80.el6_3.3.s390.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.s390x.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.s390.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.s390x.rpm
glibc-static-2.12-1.80.el6_3.3.s390.rpm
glibc-static-2.12-1.80.el6_3.3.s390x.rpm
x86_64:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-headers-2.12-1.80.el6_3.3.i686.rpm
glibc-utils-2.12-1.80.el6_3.3.i686.rpm
nscd-2.12-1.80.el6_3.3.i686.rpm
x86_64:
glibc-2.12-1.80.el6_3.3.i686.rpm
glibc-2.12-1.80.el6_3.3.x86_64.rpm
glibc-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-devel-2.12-1.80.el6_3.3.i686.rpm
glibc-devel-2.12-1.80.el6_3.3.x86_64.rpm
glibc-headers-2.12-1.80.el6_3.3.x86_64.rpm
glibc-utils-2.12-1.80.el6_3.3.x86_64.rpm
nscd-2.12-1.80.el6_3.3.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
i386:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
x86_64:
glibc-debuginfo-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-2.12-1.80.el6_3.3.x86_64.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.i686.rpm
glibc-debuginfo-common-2.12-1.80.el6_3.3.x86_64.rpm
glibc-static-2.12-1.80.el6_3.3.i686.rpm
glibc-static-2.12-1.80.el6_3.3.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
Topic
Updated glibc packages that fix three security issues and one bug are nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
Bugs Fixed
826943 - CVE-2012-3406 glibc: printf() unbound alloca() usage in case of positional parameters + many format specs
833703 - CVE-2012-3404 glibc: incorrect size calculation in formatted printing can lead to FORTIFY_SOURCE format string protection bypass
833704 - CVE-2012-3405 glibc: incorrect use of extend_alloca() in formatted printing can lead to FORTIFY_SOURCE format string protection bypass
837026 - libresolv dumps core when IPv6 address in resolv.conf