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Gentoo Linux Security Advisory 201206-31

Gentoo Linux Security Advisory 201206-31
Posted Jun 25, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201206-31 - Multiple vulnerabilities have been found in Linux-PAM, allowing local attackers to possibly gain escalated privileges, cause a Denial of Service, corrupt data, or obtain sensitive information. Versions less than 1.1.5 are affected.

tags | advisory, denial of service, local, vulnerability
systems | linux, gentoo
advisories | CVE-2010-3316, CVE-2010-3430, CVE-2010-3431, CVE-2010-3435, CVE-2010-3853, CVE-2010-4706, CVE-2010-4707, CVE-2010-4708, CVE-2011-3148, CVE-2011-3149
SHA-256 | 70b66584b8817a240db5a659f9e3fb27abfb44c6a46e9e68c554ca01bafc291f

Gentoo Linux Security Advisory 201206-31

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201206-31
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http://security.gentoo.org/
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Severity: High
Title: Linux-PAM: Multiple vulnerabilities
Date: June 25, 2012
Bugs: #343399, #386273, #388431
ID: 201206-31

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Synopsis
========

Multiple vulnerabilities have been found in Linux-PAM, allowing local
attackers to possibly gain escalated privileges, cause a Denial of
Service, corrupt data, or obtain sensitive information.

Background
==========

Linux-PAM (Pluggable Authentication Modules) is an architecture
allowing the separation of the development of privilege granting
software from the development of secure and appropriate authentication
schemes.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-libs/pam < 1.1.5 >= 1.1.5

Description
===========

Multiple vulnerabilities have been discovered in Linux-PAM. Please
review the CVE identifiers referenced below for details.

Impact
======

A local attacker could use specially crafted files to cause a buffer
overflow, possibly resulting in privilege escalation or Denial of
Service. Furthermore, a local attacker could execute specially crafted
programs or symlink attacks, possibly resulting in data loss or
disclosure of sensitive information.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Linux-PAM users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/pam-1.1.5"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since November 25, 2011. It is likely that your system is
already no longer affected by this issue.

References
==========

[ 1 ] CVE-2010-3316
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3316
[ 2 ] CVE-2010-3430
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3430
[ 3 ] CVE-2010-3431
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3431
[ 4 ] CVE-2010-3435
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3435
[ 5 ] CVE-2010-3853
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3853
[ 6 ] CVE-2010-4706
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4706
[ 7 ] CVE-2010-4707
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4707
[ 8 ] CVE-2010-4708
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4708
[ 9 ] CVE-2011-3148
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3148
[ 10 ] CVE-2011-3149
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3149

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201206-31.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5
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