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UNIRAS Brief - 664/05 - Gentoo - Evolution: Format string vulnerabilities [GLSA 200508-12]



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 664/05 dated 23.08.05  Time: 13:38  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====
Gentoo - Evolution: Format string vulnerabilities  [GLSA 200508-12]


Detail
====== 

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Gentoo Linux Security Advisory                           GLSA 200508-12
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Evolution: Format string vulnerabilities
      Date: August 23, 2005
      Bugs: #102051
        ID: 200508-12

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Synopsis
========

Evolution is vulnerable to format string vulnerabilities which may
result in remote execution of arbitrary code.

Background
==========

Evolution is a GNOME groupware application.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  mail-client/evolution     < 2.2.3-r3                  >= 2.2.3-r3

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

Ulf Harnhammar discovered that Evolution is vulnerable to format string
bugs when viewing attached vCards and when displaying contact
information from remote LDAP servers or task list data from remote
servers (CAN-2005-2549). He also discovered that Evolution fails to
handle special calendar entries if the user switches to the Calendars
tab (CAN-2005-2550).

Impact
======

An attacker could attach specially crafted vCards to emails or setup
malicious LDAP servers or calendar entries which would trigger the
format string vulnerabilities when viewed or accessed from Evolution.
This could potentially result in the execution of arbitrary code with
the rights of the user running Evolution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Evolution users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-client/evolution-2.2.3-r3"

References
==========

  [ 1 ] CAN-2005-2549
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2549
  [ 2 ] CAN-2005-2550
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2550
  [ 3 ] SITIC Vulnerability Advisory SA05-001
        http://www.sitic.se/eng/advisories_and_recommendations/sa05-001.html

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

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

  http://security.gentoo.org/glsa/glsa-200508-12.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0


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UNIRAS wishes to acknowledge the contributions of Gentoo for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
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Neither UNIRAS or NISCC shall also accept responsibility for any errors 
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not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
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members and the community at large. 
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<End of UNIRAS Briefing>

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