Red Hat: 2013:0769-01: glibc: Low Advisory
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.
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-2013-1914)
A flaw was found in the regular expression matching routines that process
multibyte character input. If an application utilized the glibc regular
expression matching mechanism, an attacker could provide specially-crafted
input that, when processed, would cause the application to crash.
(CVE-2013-0242)
This update also fixes the following bugs:
* The improvements RHSA-2012:1207 made to the accuracy of floating point
functions in the math library caused performance regressions for those
functions. The performance regressions were analyzed and a fix was applied
that retains the current accuracy but reduces the performance penalty to
acceptable levels. Refer to Red Hat Knowledge solution 229993, linked
to in the References, for further information. (BZ#950535)
* It was possible that a memory location freed by the localization code
could be accessed immediately after, resulting in a crash. The fix ensures
that the application does not crash by avoiding the invalid memory access.
(BZ#951493)
Users of glibc are advised to upgrade to these updated packages, which
contain backported patches to correct 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-2013-0242.html https://www.redhat.com/security/data/cve/CVE-2013-1914.html https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/errata/RHSA-2012:1207.html https://access.redhat.com/site/solutions/229993
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
glibc-2.5-107.el5_9.4.i386.rpm
glibc-2.5-107.el5_9.4.i686.rpm
glibc-common-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i686.rpm
glibc-debuginfo-common-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.i386.rpm
glibc-headers-2.5-107.el5_9.4.i386.rpm
glibc-utils-2.5-107.el5_9.4.i386.rpm
nscd-2.5-107.el5_9.4.i386.rpm
x86_64:
glibc-2.5-107.el5_9.4.i686.rpm
glibc-2.5-107.el5_9.4.x86_64.rpm
glibc-common-2.5-107.el5_9.4.x86_64.rpm
glibc-debuginfo-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i686.rpm
glibc-debuginfo-2.5-107.el5_9.4.x86_64.rpm
glibc-debuginfo-common-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.x86_64.rpm
glibc-headers-2.5-107.el5_9.4.x86_64.rpm
glibc-utils-2.5-107.el5_9.4.x86_64.rpm
nscd-2.5-107.el5_9.4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
glibc-2.5-107.el5_9.4.i386.rpm
glibc-2.5-107.el5_9.4.i686.rpm
glibc-common-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i686.rpm
glibc-debuginfo-common-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.i386.rpm
glibc-headers-2.5-107.el5_9.4.i386.rpm
glibc-utils-2.5-107.el5_9.4.i386.rpm
nscd-2.5-107.el5_9.4.i386.rpm
ia64:
glibc-2.5-107.el5_9.4.i686.rpm
glibc-2.5-107.el5_9.4.ia64.rpm
glibc-common-2.5-107.el5_9.4.ia64.rpm
glibc-debuginfo-2.5-107.el5_9.4.i686.rpm
glibc-debuginfo-2.5-107.el5_9.4.ia64.rpm
glibc-devel-2.5-107.el5_9.4.ia64.rpm
glibc-headers-2.5-107.el5_9.4.ia64.rpm
glibc-utils-2.5-107.el5_9.4.ia64.rpm
nscd-2.5-107.el5_9.4.ia64.rpm
ppc:
glibc-2.5-107.el5_9.4.ppc.rpm
glibc-2.5-107.el5_9.4.ppc64.rpm
glibc-common-2.5-107.el5_9.4.ppc.rpm
glibc-debuginfo-2.5-107.el5_9.4.ppc.rpm
glibc-debuginfo-2.5-107.el5_9.4.ppc64.rpm
glibc-devel-2.5-107.el5_9.4.ppc.rpm
glibc-devel-2.5-107.el5_9.4.ppc64.rpm
glibc-headers-2.5-107.el5_9.4.ppc.rpm
glibc-utils-2.5-107.el5_9.4.ppc.rpm
nscd-2.5-107.el5_9.4.ppc.rpm
s390x:
glibc-2.5-107.el5_9.4.s390.rpm
glibc-2.5-107.el5_9.4.s390x.rpm
glibc-common-2.5-107.el5_9.4.s390x.rpm
glibc-debuginfo-2.5-107.el5_9.4.s390.rpm
glibc-debuginfo-2.5-107.el5_9.4.s390x.rpm
glibc-devel-2.5-107.el5_9.4.s390.rpm
glibc-devel-2.5-107.el5_9.4.s390x.rpm
glibc-headers-2.5-107.el5_9.4.s390x.rpm
glibc-utils-2.5-107.el5_9.4.s390x.rpm
nscd-2.5-107.el5_9.4.s390x.rpm
x86_64:
glibc-2.5-107.el5_9.4.i686.rpm
glibc-2.5-107.el5_9.4.x86_64.rpm
glibc-common-2.5-107.el5_9.4.x86_64.rpm
glibc-debuginfo-2.5-107.el5_9.4.i386.rpm
glibc-debuginfo-2.5-107.el5_9.4.i686.rpm
glibc-debuginfo-2.5-107.el5_9.4.x86_64.rpm
glibc-debuginfo-common-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.i386.rpm
glibc-devel-2.5-107.el5_9.4.x86_64.rpm
glibc-headers-2.5-107.el5_9.4.x86_64.rpm
glibc-utils-2.5-107.el5_9.4.x86_64.rpm
nscd-2.5-107.el5_9.4.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 two security issues and two bugs are nowavailable for Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having lowsecurity 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 (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
905874 - CVE-2013-0242 glibc: Buffer overrun (DoS) in regexp matcher by processing multibyte characters947882 - CVE-2013-1914 glibc: Stack (frame) overflow in getaddrinfo() when processing entry mapping to long list of address structures