[ GLSA 200909-12 ] HTMLDOC: User-assisted execution of arbitrary code

[Alex Legler <a3li () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200909-12
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: HTMLDOC: User-assisted execution of arbitrary code
      Date: September 12, 2009
      Bugs: #278186
        ID: 200909-12

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Synopsis
========

Multiple insecure calls to the sscanf() function in HTMLDOC might
result in the execution of arbitrary code.

Background
==========

HTMLDOC is a HTML indexer and HTML to PS and PDF converter.

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

    -------------------------------------------------------------------
     Package           /   Vulnerable   /                   Unaffected
    -------------------------------------------------------------------
  1  app-text/htmldoc      < 1.8.27-r1                    >= 1.8.27-r1

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

ANTHRAX666 reported an insecure call to the sscanf() function in the
set_page_size() function in htmldoc/util.cxx. Nico Golde of the Debian
Security Team found two more insecure calls in the write_type1()
function in htmldoc/ps-pdf.cxx and the htmlLoadFontWidths() function in
htmldoc/htmllib.cxx.

Impact
======

A remote attacker could entice a user to process a specially crafted
HTML file using htmldoc, possibly resulting in the execution of
arbitrary code with the privileges of the user running the application.
NOTE: Additional vectors via specially crafted AFM font metric files do
not cross trust boundaries, as the files can only be modified by
privileged users.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All HTMLDOC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =app-text/htmldoc-1.8.27-r1

References
==========

  [ 1 ] CVE-2009-3050
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3050

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

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

  http://security.gentoo.org/glsa/glsa-200909-12.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
https://bugs.gentoo.org.

License
=======

Copyright 2009 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

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