An update for glibc is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which

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====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: glibc security update
Advisory ID:       RHSA-2016:1207-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2016:1207
Issue date:        2016-06-07
CVE Names:         CVE-2013-7423 
====================================================================
1. Summary:

An update for glibc is now available for Red Hat Enterprise Linux 6.5
Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64

3. Description:

The glibc packages provide the standard C libraries (libc), POSIX thread
libraries (libpthread), standard math libraries (libm), and the name
service cache daemon (nscd) used by multiple programs on the system.
Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

* It was discovered that, under certain circumstances, glibc's
getaddrinfo() function would send DNS queries to random file descriptors.
An attacker could potentially use this flaw to send DNS queries to
unintended recipients, resulting in information disclosure or data loss due
to the application encountering corrupted data. (CVE-2013-7423)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

For the update to take effect, all services linked to the glibc library
must be restarted, or the system rebooted.

5. Bugs fixed (https://bugzilla.redhat.com/):

1187109 - CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load
1339960 - CVE-2013-7423 glibc: getaddrinfo() sends DNS queries to random file descriptors [rhel-6.5.z]

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 6.5):

Source:
glibc-2.12-1.132.el6_5.8.src.rpm

x86_64:
glibc-2.12-1.132.el6_5.8.i686.rpm
glibc-2.12-1.132.el6_5.8.x86_64.rpm
glibc-common-2.12-1.132.el6_5.8.x86_64.rpm
glibc-debuginfo-2.12-1.132.el6_5.8.i686.rpm
glibc-debuginfo-2.12-1.132.el6_5.8.x86_64.rpm
glibc-debuginfo-common-2.12-1.132.el6_5.8.i686.rpm
glibc-debuginfo-common-2.12-1.132.el6_5.8.x86_64.rpm
glibc-devel-2.12-1.132.el6_5.8.i686.rpm
glibc-devel-2.12-1.132.el6_5.8.x86_64.rpm
glibc-headers-2.12-1.132.el6_5.8.x86_64.rpm
glibc-utils-2.12-1.132.el6_5.8.x86_64.rpm
nscd-2.12-1.132.el6_5.8.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 6.5):

Source:
glibc-2.12-1.132.el6_5.8.src.rpm

x86_64:
glibc-debuginfo-2.12-1.132.el6_5.8.i686.rpm
glibc-debuginfo-2.12-1.132.el6_5.8.x86_64.rpm
glibc-debuginfo-common-2.12-1.132.el6_5.8.i686.rpm
glibc-debuginfo-common-2.12-1.132.el6_5.8.x86_64.rpm
glibc-static-2.12-1.132.el6_5.8.i686.rpm
glibc-static-2.12-1.132.el6_5.8.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/

7. References:

https://access.redhat.com/security/cve/CVE-2013-7423
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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