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Red Hat Security Advisory 2014-1391-02

Red Hat Security Advisory 2014-1391-02
Posted Oct 14, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1391-02 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the Name Server Caching Daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An out-of-bounds write flaw was found in the way the glibc's readdir_r() function handled file system entries longer than the NAME_MAX character constant. A remote attacker could provide a specially crafted NTFS or CIFS file system that, when processed by an application using readdir_r(), would cause that application to crash or, potentially, allow the attacker to execute arbitrary code with the privileges of the user running the application.

tags | advisory, remote, arbitrary
systems | linux, redhat, osx
advisories | CVE-2013-4237, CVE-2013-4458
MD5 | 16b6365b91ce933d51c00f237560678d

Red Hat Security Advisory 2014-1391-02

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: glibc security, bug fix, and enhancement update
Advisory ID: RHSA-2014:1391-02
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1391.html
Issue date: 2014-10-14
CVE Names: CVE-2013-4237 CVE-2013-4458
=====================================================================

1. Summary:

Updated glibc packages that fix two security issues, several bugs, and add
two enhancements 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.

An out-of-bounds write flaw was found in the way the glibc's readdir_r()
function handled file system entries longer than the NAME_MAX character
constant. A remote attacker could provide a specially crafted NTFS or CIFS
file system that, when processed by an application using readdir_r(), would
cause that application to crash or, potentially, allow the attacker to
execute arbitrary code with the privileges of the user running the
application. (CVE-2013-4237)

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-2013-4458)

These updated glibc packages also include several bug fixes and two
enhancements. Space precludes documenting all of these changes in this
advisory. Users are directed to the Red Hat Enterprise Linux 6.6 Technical
Notes, linked to in the References section, for information on the most
significant of these changes.

All glibc users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues and add these
enhancements.

4. 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/articles/11258

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

905941 - Fix memory fencing error in unwind-forcedunwind.c
981942 - ping6 with idn causes crash
995839 - CVE-2013-4237 glibc: Buffer overwrite when using readdir_r on file systems returning file names longer than NAME_MAX characters
1022280 - CVE-2013-4458 glibc: Stack (frame) overflow in getaddrinfo() when called with AF_INET6
1032628 - Symbol lookup in elf/dl-lookup.c results in returning wrong values
1043557 - nscd segfaults when running sudo with netgroup caching enabled.
1044628 - getaddrinfo return EAI_NONAME instead of EAI_AGAIN in case the DNS query times out
1087833 - nscd-2.12-1.132.el6 enters busy loop on long netgroup entry via nss_ldap of nslcd
1099025 - ftime() possibly broken on ppc

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
glibc-2.12-1.149.el6.src.rpm

i386:
glibc-2.12-1.149.el6.i686.rpm
glibc-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-headers-2.12-1.149.el6.i686.rpm
glibc-utils-2.12-1.149.el6.i686.rpm
nscd-2.12-1.149.el6.i686.rpm

x86_64:
glibc-2.12-1.149.el6.i686.rpm
glibc-2.12-1.149.el6.x86_64.rpm
glibc-common-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.x86_64.rpm
glibc-headers-2.12-1.149.el6.x86_64.rpm
glibc-utils-2.12-1.149.el6.x86_64.rpm
nscd-2.12-1.149.el6.x86_64.rpm

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

i386:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.i686.rpm

x86_64:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-static-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.x86_64.rpm

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

Source:
glibc-2.12-1.149.el6.src.rpm

x86_64:
glibc-2.12-1.149.el6.i686.rpm
glibc-2.12-1.149.el6.x86_64.rpm
glibc-common-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.x86_64.rpm
glibc-headers-2.12-1.149.el6.x86_64.rpm
glibc-utils-2.12-1.149.el6.x86_64.rpm
nscd-2.12-1.149.el6.x86_64.rpm

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

x86_64:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-static-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
glibc-2.12-1.149.el6.src.rpm

i386:
glibc-2.12-1.149.el6.i686.rpm
glibc-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-headers-2.12-1.149.el6.i686.rpm
glibc-utils-2.12-1.149.el6.i686.rpm
nscd-2.12-1.149.el6.i686.rpm

ppc64:
glibc-2.12-1.149.el6.ppc.rpm
glibc-2.12-1.149.el6.ppc64.rpm
glibc-common-2.12-1.149.el6.ppc64.rpm
glibc-debuginfo-2.12-1.149.el6.ppc.rpm
glibc-debuginfo-2.12-1.149.el6.ppc64.rpm
glibc-debuginfo-common-2.12-1.149.el6.ppc.rpm
glibc-debuginfo-common-2.12-1.149.el6.ppc64.rpm
glibc-devel-2.12-1.149.el6.ppc.rpm
glibc-devel-2.12-1.149.el6.ppc64.rpm
glibc-headers-2.12-1.149.el6.ppc64.rpm
glibc-utils-2.12-1.149.el6.ppc64.rpm
nscd-2.12-1.149.el6.ppc64.rpm

s390x:
glibc-2.12-1.149.el6.s390.rpm
glibc-2.12-1.149.el6.s390x.rpm
glibc-common-2.12-1.149.el6.s390x.rpm
glibc-debuginfo-2.12-1.149.el6.s390.rpm
glibc-debuginfo-2.12-1.149.el6.s390x.rpm
glibc-debuginfo-common-2.12-1.149.el6.s390.rpm
glibc-debuginfo-common-2.12-1.149.el6.s390x.rpm
glibc-devel-2.12-1.149.el6.s390.rpm
glibc-devel-2.12-1.149.el6.s390x.rpm
glibc-headers-2.12-1.149.el6.s390x.rpm
glibc-utils-2.12-1.149.el6.s390x.rpm
nscd-2.12-1.149.el6.s390x.rpm

x86_64:
glibc-2.12-1.149.el6.i686.rpm
glibc-2.12-1.149.el6.x86_64.rpm
glibc-common-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.x86_64.rpm
glibc-headers-2.12-1.149.el6.x86_64.rpm
glibc-utils-2.12-1.149.el6.x86_64.rpm
nscd-2.12-1.149.el6.x86_64.rpm

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

i386:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.i686.rpm

ppc64:
glibc-debuginfo-2.12-1.149.el6.ppc.rpm
glibc-debuginfo-2.12-1.149.el6.ppc64.rpm
glibc-debuginfo-common-2.12-1.149.el6.ppc.rpm
glibc-debuginfo-common-2.12-1.149.el6.ppc64.rpm
glibc-static-2.12-1.149.el6.ppc.rpm
glibc-static-2.12-1.149.el6.ppc64.rpm

s390x:
glibc-debuginfo-2.12-1.149.el6.s390.rpm
glibc-debuginfo-2.12-1.149.el6.s390x.rpm
glibc-debuginfo-common-2.12-1.149.el6.s390.rpm
glibc-debuginfo-common-2.12-1.149.el6.s390x.rpm
glibc-static-2.12-1.149.el6.s390.rpm
glibc-static-2.12-1.149.el6.s390x.rpm

x86_64:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-static-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
glibc-2.12-1.149.el6.src.rpm

i386:
glibc-2.12-1.149.el6.i686.rpm
glibc-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-headers-2.12-1.149.el6.i686.rpm
glibc-utils-2.12-1.149.el6.i686.rpm
nscd-2.12-1.149.el6.i686.rpm

x86_64:
glibc-2.12-1.149.el6.i686.rpm
glibc-2.12-1.149.el6.x86_64.rpm
glibc-common-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-devel-2.12-1.149.el6.i686.rpm
glibc-devel-2.12-1.149.el6.x86_64.rpm
glibc-headers-2.12-1.149.el6.x86_64.rpm
glibc-utils-2.12-1.149.el6.x86_64.rpm
nscd-2.12-1.149.el6.x86_64.rpm

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

i386:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.i686.rpm

x86_64:
glibc-debuginfo-2.12-1.149.el6.i686.rpm
glibc-debuginfo-2.12-1.149.el6.x86_64.rpm
glibc-debuginfo-common-2.12-1.149.el6.i686.rpm
glibc-debuginfo-common-2.12-1.149.el6.x86_64.rpm
glibc-static-2.12-1.149.el6.i686.rpm
glibc-static-2.12-1.149.el6.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

7. References:

https://www.redhat.com/security/data/cve/CVE-2013-4237.html
https://www.redhat.com/security/data/cve/CVE-2013-4458.html
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.6_Technical_Notes/glibc.html#RHSA-2014-1391

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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