Ispravljena su dva nedostatka programskog paketa bip koja je udaljeni napadač mogao iskoristiti za pokretanje proizvoljnog programskog koda ili izvođenje DoS (eng. Denial of Service) napada.

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Gentoo Linux Security Advisory                           GLSA 201201-18
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                                            http://security.gentoo.org/
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 Severity: High
    Title: bip: Multiple vulnerabilities
     Date: January 30, 2012
     Bugs: #336321, #400599
       ID: 201201-18

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Synopsis
========

Multiple vulnerabilities in bip might allow remote unauthenticated
attackers to cause a Denial of Service or possibly execute arbitrary
code.

Background
==========

bip is a multi-user IRC proxy with SSL support.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-irc/bip                 < 0.8.8-r1               >= 0.8.8-r1 

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

Multiple vulnerabilities have been discovered in bip:

* Uli Schlachter reported that bip does not properly handle invalid
data during authentication, resulting in a daemon crash
(CVE-2010-3071).
* Julien Tinnes reported that bip does not check the number of open
file descriptors against FD_SETSIZE, resulting in a stack buffer
overflow (CVE-2012-0806).

Impact
======

A remote attacker could exploit these vulnerabilities to execute
arbitrary code with the privileges of the user running the bip daemon,
or cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All bip users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-irc/bip-0.8.8-r1"

NOTE: The CVE-2010-3071 flaw was already corrected in an earlier
version of bip and is included in this advisory for completeness.

References
==========

[ 1 ] CVE-2010-3071
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3071
[ 2 ] CVE-2012-0806
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0806

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

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

 http://security.gentoo.org/glsa/glsa-201201-18.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