[Full-Disclosure] [ GLSA 200406-14 ] aspell: Buffer overflow in word-list-compress

From: Thierry Carrez (koon_at_gentoo.org)
Date: 06/17/04

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    Date: Thu, 17 Jun 2004 21:39:56 +0200
    
    

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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@gentoo.org 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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