Red Hat: 2012:1097-01: 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.
It was discovered that the formatted printing functionality in glibc did
not properly restrict the use of alloca(). 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-2012-3406)
This update also fixes the following bug:
* If a file or a string was in the IBM-930 encoding, and contained the
invalid multibyte character "0xffff", attempting to use iconv() (or the
iconv command) to convert that file or string to another encoding, such as
UTF-8, resulted in a segmentation fault. With this update, the conversion
code for the IBM-930 encoding recognizes this invalid character and calls
an error handler, rather than causing a segmentation fault. (BZ#837896)
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-2012-3406.html 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_8.4.i386.rpm
glibc-2.5-81.el5_8.4.i686.rpm
glibc-common-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.i386.rpm
glibc-headers-2.5-81.el5_8.4.i386.rpm
glibc-utils-2.5-81.el5_8.4.i386.rpm
nscd-2.5-81.el5_8.4.i386.rpm
x86_64:
glibc-2.5-81.el5_8.4.i686.rpm
glibc-2.5-81.el5_8.4.x86_64.rpm
glibc-common-2.5-81.el5_8.4.x86_64.rpm
glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
glibc-debuginfo-2.5-81.el5_8.4.x86_64.rpm
glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.x86_64.rpm
glibc-headers-2.5-81.el5_8.4.x86_64.rpm
glibc-utils-2.5-81.el5_8.4.x86_64.rpm
nscd-2.5-81.el5_8.4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
glibc-2.5-81.el5_8.4.i386.rpm
glibc-2.5-81.el5_8.4.i686.rpm
glibc-common-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.i386.rpm
glibc-headers-2.5-81.el5_8.4.i386.rpm
glibc-utils-2.5-81.el5_8.4.i386.rpm
nscd-2.5-81.el5_8.4.i386.rpm
ia64:
glibc-2.5-81.el5_8.4.i686.rpm
glibc-2.5-81.el5_8.4.ia64.rpm
glibc-common-2.5-81.el5_8.4.ia64.rpm
glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
glibc-debuginfo-2.5-81.el5_8.4.ia64.rpm
glibc-devel-2.5-81.el5_8.4.ia64.rpm
glibc-headers-2.5-81.el5_8.4.ia64.rpm
glibc-utils-2.5-81.el5_8.4.ia64.rpm
nscd-2.5-81.el5_8.4.ia64.rpm
ppc:
glibc-2.5-81.el5_8.4.ppc.rpm
glibc-2.5-81.el5_8.4.ppc64.rpm
glibc-common-2.5-81.el5_8.4.ppc.rpm
glibc-debuginfo-2.5-81.el5_8.4.ppc.rpm
glibc-debuginfo-2.5-81.el5_8.4.ppc64.rpm
glibc-devel-2.5-81.el5_8.4.ppc.rpm
glibc-devel-2.5-81.el5_8.4.ppc64.rpm
glibc-headers-2.5-81.el5_8.4.ppc.rpm
glibc-utils-2.5-81.el5_8.4.ppc.rpm
nscd-2.5-81.el5_8.4.ppc.rpm
s390x:
glibc-2.5-81.el5_8.4.s390.rpm
glibc-2.5-81.el5_8.4.s390x.rpm
glibc-common-2.5-81.el5_8.4.s390x.rpm
glibc-debuginfo-2.5-81.el5_8.4.s390.rpm
glibc-debuginfo-2.5-81.el5_8.4.s390x.rpm
glibc-devel-2.5-81.el5_8.4.s390.rpm
glibc-devel-2.5-81.el5_8.4.s390x.rpm
glibc-headers-2.5-81.el5_8.4.s390x.rpm
glibc-utils-2.5-81.el5_8.4.s390x.rpm
nscd-2.5-81.el5_8.4.s390x.rpm
x86_64:
glibc-2.5-81.el5_8.4.i686.rpm
glibc-2.5-81.el5_8.4.x86_64.rpm
glibc-common-2.5-81.el5_8.4.x86_64.rpm
glibc-debuginfo-2.5-81.el5_8.4.i386.rpm
glibc-debuginfo-2.5-81.el5_8.4.i686.rpm
glibc-debuginfo-2.5-81.el5_8.4.x86_64.rpm
glibc-debuginfo-common-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.i386.rpm
glibc-devel-2.5-81.el5_8.4.x86_64.rpm
glibc-headers-2.5-81.el5_8.4.x86_64.rpm
glibc-utils-2.5-81.el5_8.4.x86_64.rpm
nscd-2.5-81.el5_8.4.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 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.
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
826943 - CVE-2012-3406 glibc: printf() unbound alloca() usage in case of positional parameters + many format specs