--zbGR4y+acU1DwHSi
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200702-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: CHMlib: User-assisted remote execution of arbitrary code
      Date: February 27, 2007
      Bugs: #163989
        ID: 200702-12

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A memory corruption vulnerability in CHMlib could lead to the remote
execution of arbitrary code.

Background
==========

CHMlib is a library for the MS CHM (Compressed HTML) file format plus
extracting and HTTP server utils.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  app-doc/chmlib       < 0.39                               >= 0.39

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

When certain CHM files that contain tables and objects stored in pages
are parsed by CHMlib, an unsanitized value is passed to the alloca()
function resulting in a shift of the stack pointer to arbitrary memory
locations.

Impact
======

An attacker could entice a user to open a specially crafted CHM file,
resulting in the execution of arbitrary code with the permissions of
the user viewing the file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All CHMlib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-doc/chmlib-0.39"

References
==========

  [ 1 ] Original Advisory
        display.php?id=468
  [ 2 ] CVE-2007-0619
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0619

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

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

  http://security.gentoo.org/glsa/glsa-200702-12.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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/2.5

--zbGR4y+acU1DwHSi
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iQEVAwUBReRNBzvRww8BFPxFAQLi5Af9GJDBBYWujoPaf47J9rKhErf6RGaEuhwt
QJda5fJb2LMljNUD8p/chd9NVuQUYOVXXjePBqvZQ+gC4SikygjLQLMdbXVHrDXz
rIiP+iaPI+SGVPTvJWLIgQwLpgCuviaPpu6gwyKb9I8jzj2v5R6EfDpEL1NFVCf/
bPsQyagDCQjYOtyjUZ3TdZQ5soWNVdkpJ+S3c9luvNlzXzbfn0lli/MGxqWbdZ36
m+vrBu51/fNiZNAR3ClrMvc3KO27nh4i1EhaSVs4I8X7jkB1VLTWWsNDq+rp+Q8Y
sucBLO4dhcuI15sJ2OxIwsWcQnZCspkyl5EsUeLnykntKGamGmtpqw==
=fmwe
-----END PGP SIGNATURE-----

--zbGR4y+acU1DwHSi--
-- 
gentoo-announce@gentoo.org mailing list