[ GLSA 200405-13 ] neon heap-based buffer overflow

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200405-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: neon heap-based buffer overflow
      Date: May 20, 2004
      Bugs: #51490
        ID: 200405-13

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Synopsis
========

A vulnerability potentially allowing remote execution of arbitrary code
has been discovered in the neon library.

Background
==========

neon provides an HTTP and WebDAV client library.

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

    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  net-misc/neon       <= 0.24.5                           >= 0.24.6

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

Stefan Esser discovered a vulnerability in the code of the neon library
: if a malicious date string is passed to the ne_rfc1036_parse()
function, it can trigger a string overflow into static heap variables.

Impact
======

Depending on the application linked against libneon and when connected
to a malicious WebDAV server, this vulnerability could allow execution
of arbitrary code with the rights of the user running that application.

Workaround
==========

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

Resolution
==========

All users of neon should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-misc/neon-0.24.6"
    # emerge ">=net-misc/neon-0.24.6"

References
==========

  [ 1 ] E-matters advisory 06/2004
        http://security.e-matters.de/advisories/062004.html
  [ 2 ] CAN-2004-0398
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0398

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

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

     http://security.gentoo.org/glsa/glsa-200405-13.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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