Moderate CentOS glibc Security Update

Metadata

medium
5.0
glibc-2.12-1.149.el6_6.4.i686.rpm, glibc-2.12-1.149.el6_6.4.src.rpm, glibc-2.12-1.149.el6_6.4.x86_64.rpm, glibc-common-2.12-1.149.el6_6.4.i686.rpm, glibc-common-2.12-1.149.el6_6.4.x86_64.rpm, glibc-devel-2.12-1.149.el6_6.4.i686.rpm, glibc-devel-2.12-1.149.el6_6.4.x86_64.rpm, glibc-headers-2.12-1.149.el6_6.4.i686.rpm, glibc-headers-2.12-1.149.el6_6.4.x86_64.rpm, glibc-static-2.12-1.149.el6_6.4.i686.rpm, glibc-static-2.12-1.149.el6_6.4.x86_64.rpm, glibc-utils-2.12-1.149.el6_6.4.i686.rpm, glibc-utils-2.12-1.149.el6_6.4.x86_64.rpm, nscd-2.12-1.149.el6_6.4.i686.rpm, nscd-2.12-1.149.el6_6.4.x86_64.rpm
CVE-2014-6040, CVE-2014-7817
rhn.redhat.com, lists.centos.org
2015-01-07
2017-07-27 19:08
ALAS-2015-495
ALAS-2015-468
Moderate CentOS glibc Security Update
Moderate CentOS glibc Security Update
CVE-2014-6040 glibc
CVE-2014-7817 eglibc
CVE-2014-6040 eglibc
CVE-2014-7817 glibc
CVE-2014-6040
CVE-2014-7817
2017-04-01 19:08
2017-01-05 20:12

Description


Updated glibc packages that fix two security issues and two bugs 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 read flaw was found in the way glibc's iconv() function
converted certain encoded data to UTF-8. An attacker able to make an
application call the iconv() function with a specially crafted argument
could use this flaw to crash that application. (CVE-2014-6040)

It was found that the wordexp() function would perform command substitution
even when the WRDE_NOCMD flag was specified. An attacker able to provide
specially crafted input to an application using the wordexp() function, and
not sanitizing the input correctly, could potentially use this flaw to
execute arbitrary commands with the credentials of the user running that
application. (CVE-2014-7817)

The CVE-2014-7817 issue was discovered by Tim Waugh of the Red Hat
Developer Experience Team.

This update also fixes the following bugs:

* Previously, when an address lookup using the getaddrinfo() function for
the AF_UNSPEC value was performed on a defective DNS server, the server in
some cases responded with a valid response for the A record, but a referral
response for the AAAA record, which resulted in a lookup failure. A prior
update was implemented for getaddrinfo() to return the valid response, but
it contained a typographical error, due to which the lookup could under
some circumstances still fail. This error has been corrected and
getaddrinfo() now returns a valid response in the described circumstances.
(BZ#1172023)

* An error in the dlopen() library function previously caused recursive
calls to dlopen() to terminate unexpectedly or to abort with a library
assertion. This error has been fixed and recursive calls to dlopen() no
longer crash or abort. (BZ#1173469)

All glibc users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
Please see https://www.redhat.com/footer/terms-of-use.html

Am I vulnerable?

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Affected package information

Release Package Patched in
6 glibc glibc-2.12-1.149.el6_6.4.x86_64.rpm
glibc glibc-2.12-1.149.el6_6.4.i686.rpm
glibc glibc-2.12-1.149.el6_6.4.src.rpm
glibc-common glibc-common-2.12-1.149.el6_6.4.i686.rpm
glibc-common glibc-common-2.12-1.149.el6_6.4.x86_64.rpm
glibc-devel glibc-devel-2.12-1.149.el6_6.4.x86_64.rpm
glibc-devel glibc-devel-2.12-1.149.el6_6.4.i686.rpm
glibc-headers glibc-headers-2.12-1.149.el6_6.4.i686.rpm
glibc-headers glibc-headers-2.12-1.149.el6_6.4.x86_64.rpm
glibc-static glibc-static-2.12-1.149.el6_6.4.i686.rpm
glibc-static glibc-static-2.12-1.149.el6_6.4.x86_64.rpm
glibc-utils glibc-utils-2.12-1.149.el6_6.4.i686.rpm
glibc-utils glibc-utils-2.12-1.149.el6_6.4.x86_64.rpm
nscd nscd-2.12-1.149.el6_6.4.x86_64.rpm
nscd nscd-2.12-1.149.el6_6.4.i686.rpm