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[RHSA-2015:0863-01] Moderate: glibc security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Moderate: glibc security and bug fix update

Advisory ID: RHSA-2015:0863-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0863.html

Issue date: 2015-04-21

CVE Names: CVE-2013-7423 CVE-2015-1781

=====================================================================

 

1. Summary:

 

Updated glibc packages that fix two security issues and one bug 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.

 

2. 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

 

3. Description:

 

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.

 

A buffer overflow flaw was found in the way glibc's gethostbyname_r() and

other related functions computed the size of a buffer when passed a

misaligned buffer as input. An attacker able to make an application call

any of these functions with a misaligned buffer could use this flaw to

crash the application or, potentially, execute arbitrary code with the

permissions of the user running the application. (CVE-2015-1781)

 

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)

 

The CVE-2015-1781 issue was discovered by Arjun Shankar of Red Hat.

 

This update also fixes the following bug:

 

* Previously, the nscd daemon did not properly reload modified data when

the user edited monitored nscd configuration files. As a consequence, nscd

returned stale data to system processes. This update adds a system of

inotify-based monitoring and stat-based backup monitoring for nscd

configuration files. As a result, nscd now detects changes to its

configuration files and reloads the data properly, which prevents it from

returning stale data. (BZ#1194149)

 

All glibc users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

For details on how to apply this update, refer to:

 

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

 

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

 

1187109 - CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load

1199525 - CVE-2015-1781 glibc: buffer overflow in gethostbyname_r() and related functions with misaligned buffer

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

glibc-2.12-1.149.el6_6.7.src.rpm

 

i386:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-headers-2.12-1.149.el6_6.7.i686.rpm

glibc-utils-2.12-1.149.el6_6.7.i686.rpm

nscd-2.12-1.149.el6_6.7.i686.rpm

 

x86_64:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-2.12-1.149.el6_6.7.x86_64.rpm

glibc-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm

glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm

glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm

nscd-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

i386:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

 

x86_64:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

glibc-2.12-1.149.el6_6.7.src.rpm

 

x86_64:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-2.12-1.149.el6_6.7.x86_64.rpm

glibc-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm

glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm

glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm

nscd-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

x86_64:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

glibc-2.12-1.149.el6_6.7.src.rpm

 

i386:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-headers-2.12-1.149.el6_6.7.i686.rpm

glibc-utils-2.12-1.149.el6_6.7.i686.rpm

nscd-2.12-1.149.el6_6.7.i686.rpm

 

ppc64:

glibc-2.12-1.149.el6_6.7.ppc.rpm

glibc-2.12-1.149.el6_6.7.ppc64.rpm

glibc-common-2.12-1.149.el6_6.7.ppc64.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.ppc.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.ppc64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc64.rpm

glibc-devel-2.12-1.149.el6_6.7.ppc.rpm

glibc-devel-2.12-1.149.el6_6.7.ppc64.rpm

glibc-headers-2.12-1.149.el6_6.7.ppc64.rpm

glibc-utils-2.12-1.149.el6_6.7.ppc64.rpm

nscd-2.12-1.149.el6_6.7.ppc64.rpm

 

s390x:

glibc-2.12-1.149.el6_6.7.s390.rpm

glibc-2.12-1.149.el6_6.7.s390x.rpm

glibc-common-2.12-1.149.el6_6.7.s390x.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.s390.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.s390x.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.s390.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.s390x.rpm

glibc-devel-2.12-1.149.el6_6.7.s390.rpm

glibc-devel-2.12-1.149.el6_6.7.s390x.rpm

glibc-headers-2.12-1.149.el6_6.7.s390x.rpm

glibc-utils-2.12-1.149.el6_6.7.s390x.rpm

nscd-2.12-1.149.el6_6.7.s390x.rpm

 

x86_64:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-2.12-1.149.el6_6.7.x86_64.rpm

glibc-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm

glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm

glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm

nscd-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

i386:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

 

ppc64:

glibc-debuginfo-2.12-1.149.el6_6.7.ppc.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.ppc64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc64.rpm

glibc-static-2.12-1.149.el6_6.7.ppc.rpm

glibc-static-2.12-1.149.el6_6.7.ppc64.rpm

 

s390x:

glibc-debuginfo-2.12-1.149.el6_6.7.s390.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.s390x.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.s390.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.s390x.rpm

glibc-static-2.12-1.149.el6_6.7.s390.rpm

glibc-static-2.12-1.149.el6_6.7.s390x.rpm

 

x86_64:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

glibc-2.12-1.149.el6_6.7.src.rpm

 

i386:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-headers-2.12-1.149.el6_6.7.i686.rpm

glibc-utils-2.12-1.149.el6_6.7.i686.rpm

nscd-2.12-1.149.el6_6.7.i686.rpm

 

x86_64:

glibc-2.12-1.149.el6_6.7.i686.rpm

glibc-2.12-1.149.el6_6.7.x86_64.rpm

glibc-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-devel-2.12-1.149.el6_6.7.i686.rpm

glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm

glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm

glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm

nscd-2.12-1.149.el6_6.7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

i386:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

 

x86_64:

glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm

glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm

glibc-static-2.12-1.149.el6_6.7.i686.rpm

glibc-static-2.12-1.149.el6_6.7.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/cve/CVE-2015-1781

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 2015 Red Hat, Inc.

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