Otkriveno je više sigurnosnih propusta u radu programskog paketa Linux-PAM. Lokalni napadač ih može iskoristiti za DoS (eng. Denial of Service) napad, čitanje i izmjenu podataka, te dobivanje većih privilegija u sustavu.

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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
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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