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UNIRAS Brief - 313/04 - Gentoo Linux Security Advisory - GLSA 200406-14 - aspell: Buffer overflow in



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 313/04 dated 21.06.04  Time: 15:35  
  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 Linux Security Advisory - GLSA 200406-14 - aspell: Buffer overflow in 
word-list-compress


Detail
====== 


aspell includes a utility for handling wordlists called word-list-compress. 
This utility fails to do proper bounds checking when processing words longer 
than 256 bytes.








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Gentoo Linux Security Advisory                           GLSA 200406-14
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: aspell: Buffer overflow in word-list-compress
      Date: June 17, 2004
      Bugs: #53389
        ID: 200406-14

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Synopsis
========

A bug in the aspell utility word-list-compress can allow an attacker to execute 
arbitrary code.

Background
==========

aspell is a popular spell-checker. Dictionaries are available for many languages.

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

    -------------------------------------------------------------------
     Package          /    Vulnerable    /                  Unaffected
    -------------------------------------------------------------------
  1  app-text/aspell      <= 0.50.5-r1                    >= 0.50.5-r2

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

aspell includes a utility for handling wordlists called word-list-compress. This 
utility fails to do proper bounds checking when processing words longer than 256 bytes.

Impact
======

If an attacker could entice a user to handle a wordlist containing very long 
word lengths it could result in the execution of arbitrary code with the 
permissions of the user running the program.

Workaround
==========

There is no known workaround at this time. All users are encouraged to upgrade 
to the latest available version.

Resolution
==========

All users should upgrade to the latest available version of aspell.

    # emerge sync

    # emerge -pv ">=app-text/aspell-0.50.5-r2"
    # emerge ">=app-text/aspell-0.50.5-r2"

References
==========

  [ 1 ] Nettwerked Advisory
        http://nettwerked.mg2.org/advisories/wlc

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

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

     http://security.gentoo.org/glsa/glsa-200406-14.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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UNIRAS wishes to acknowledge the contributions of Gentoo for the information 
contained in this Briefing. 
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<End of UNIRAS Briefing>

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