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UNIRAS Brief - 273/04 -Two Gentoo Security Advisories



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 273/04 dated 07.06.04  Time: 12:20  
  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 Security Advisories:

1. GLSA 200406-01:Ethereal: Multiple security problems

2. GLSA 200406-02:tripwire: Format string vulnerability


Detail
====== 

1. Multiple vulnerabilities including one buffer overflow exist in Ethereal, 
which may allow an attacker to run arbitrary code or crash the program.

2. A vulnerability allowing arbitrary code execution under certain circumstances
has been found.




1.

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Gentoo Linux Security Advisory                           GLSA 200406-01
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Ethereal: Multiple security problems
      Date: June 04, 2004
      Bugs: #51022
        ID: 200406-01

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Synopsis
========

Multiple vulnerabilities including one buffer overflow exist in Ethereal, which may allow an attacker to run arbitrary code or crash the program.

Background
==========

Ethereal is a feature rich network protocol analyzer.

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

    -------------------------------------------------------------------
     Package                /   Vulnerable   /              Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/ethereal       <= 0.10.3                   >= 0.10.4

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

There are multiple vulnerabilities in versions of Ethereal earlier than 0.10.4, including:

* A buffer overflow in the MMSE dissector.

* Under specific conditions a SIP packet could make Ethereal crash.

* The AIM dissector could throw an assertion, causing Ethereal to
  crash.

* The SPNEGO dissector could dereference a null pointer, causing a
  crash.

Impact
======

An attacker could use these vulnerabilities to crash Ethereal or even execute arbitrary code with the permissions of the user running Ethereal, which could be the root user.

Workaround
==========

For a temporary workaround you can disable all affected protocol dissectors by selecting Analyze->Enabled Protocols... and deselecting them from the list. However, it is strongly recommended to upgrade to the latest stable release.

Resolution
==========

All Ethereal users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-analyzer/ethereal-0.10.4"
    # emerge ">=net-analyzer/ethereal-0.10.4"

References
==========

  [ 1 ] Ethereal enpa-sa-00014
        http://www.ethereal.com/appnotes/enpa-sa-00014.html

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

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

     http://security.gentoo.org/glsa/glsa-200406-01.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 2004 Gentoo Technologies, 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/1.0

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2.

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Gentoo Linux Security Advisory                           GLSA 200406-02
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                                            http://security.gentoo.org/
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  Severity: High
     Title: tripwire: Format string vulnerability
      Date: June 04, 2004
      Bugs: #52945
        ID: 200406-02

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Synopsis
========

A vulnerability allowing arbitrary code execution under certain circumstances has been found.

Background
==========

tripwire is an open source file integrity checker.

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

    -------------------------------------------------------------------
     Package             /   Vulnerable   /                 Unaffected
    -------------------------------------------------------------------
  1  app-admin/tripwire      <= 2.3.1.2                  >= 2.3.1.2-r1

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

The code that generates email reports contains a format string vulnerability in pipedmailmessage.cpp.

Impact
======

With a carefully crafted filename on a local filesystem an attacker could cause execution of arbitrary code with permissions of the user running tripwire, which could be the root user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All tripwire users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=app-admin/tripwire-2.3.1.2-r1"
    # emerge ">=app-admin/tripwire-2.3.1.2-r1"

References
==========

  [ 1 ] Bugtraq Announcement

http://www.securityfocus.com/archive/1/365036/2004-05-31/2004-06-06/0

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

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

     http://security.gentoo.org/glsa/glsa-200406-02.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 2004 Gentoo Technologies, 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/1.0

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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

Office Hours:
Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 20 7821 1330 Ext 4511
Fax: +44 (0) 20 7821 1686

Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 20 7821 1330 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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