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UNIRAS Brief - 451/05 -Two Gentoo Linux Security Advisories:



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 451/05 dated 14.06.05  Time: 14:30  
  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
=====

Two Gentoo Linux Security Advisories:

1. GLSA 200506-12 - MediaWiki

2. GLSA 200505-06:02 - TCPDump

Detail
====== 

1. MediaWiki incorrectly handles page template inclusions, rendering it
vulnerable to cross-site scripting attacks.

2. TCPDump improperly handles and decodes ISIS (CAN-2005-1278), BGP
(CAN-2005-1267, CAN-2005-1279), LDP (CAN-2005-1279) and RSVP
(CAN-2005-1280) packets. TCPDump might loop endlessly after receiving
malformed packets.


1.


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Gentoo Linux Security Advisory                           GLSA 200506-12
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: MediaWiki: Cross-site scripting vulnerability
      Date: June 13, 2005
      Bugs: #95255
        ID: 200506-12

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Synopsis
========

MediaWiki is vulnerable to a cross-site scripting attack that could
allow arbitrary scripting code execution.

Background
==========

MediaWiki is a collaborative editing software, used by big projects
like Wikipedia.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  www-apps/mediawiki       < 1.4.5                         >= 1.4.5
                                                            *>= 1.3.13

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

MediaWiki incorrectly handles page template inclusions, rendering it
vulnerable to cross-site scripting attacks.

Impact
======

A remote attacker could exploit this vulnerability to inject malicious
script code that will be executed in a user's browser session in the
context of the vulnerable site.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MediaWiki users should upgrade to the latest available versions:

    # emerge --sync
    # emerge --ask --oneshot --verbose www-apps/mediawiki

References
==========

  [ 1 ] MediaWiki 1.4.5 Release Notes
        http://sourceforge.net/project/shownotes.php?release_id=332231

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

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

  http://security.gentoo.org/glsa/glsa-200506-12.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



2.


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Gentoo Linux Security Advisory [UPDATE]               GLSA 200505-06:02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: TCPDump: Decoding routines Denial of Service vulnerability
      Date: May 09, 2005
   Updated: June 12, 2005
      Bugs: #90541, #95349
        ID: 200505-06:02

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Update
======

While working on the tcpdump issues solved in the original version of
this GLSA, Simon L. Nielsen from FreeBSD Security Team discovered a
similar infinite loop DoS vulnerability in the BGP handling code
(CAN-2005-1267). New packages have been released to address this new
issue.

The updated sections appear below.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/tcpdump     < 3.8.3-r3                   >= 3.8.3-r3

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

TCPDump improperly handles and decodes ISIS (CAN-2005-1278), BGP
(CAN-2005-1267, CAN-2005-1279), LDP (CAN-2005-1279) and RSVP
(CAN-2005-1280) packets. TCPDump might loop endlessly after receiving
malformed packets.

Resolution
==========

All TCPDump users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.8.3-r3"

References
==========

  [ 1 ] CAN-2005-1267
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1267
  [ 2 ] CAN-2005-1278
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1278
  [ 3 ] CAN-2005-1279
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1279
  [ 4 ] CAN-2005-1280
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1280

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

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

  http://security.gentoo.org/glsa/glsa-200505-06.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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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via 
EMail to: uniras@xxxxxxxxxxxx

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Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 870 487 0748 and follow the prompts

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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 
advertising or product endorsement purposes.

Neither UNIRAS or NISCC shall also accept responsibility for any errors 
or omissions contained within this briefing notice. In particular, they shall 
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 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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