[ GLSA 200710-12 ] T1Lib: Buffer overflow

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200710-12
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: T1Lib: Buffer overflow
      Date: October 12, 2007
      Bugs: #193437
        ID: 200710-12

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Synopsis
========

T1Lib is vulnerable to a buffer overflow allowing for the user-assisted
execution of arbitrary code.

Background
==========

T1Lib is a library for rasterizing bitmaps from Adobe Type 1 fonts.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  media-libs/t1lib     < 5.0.2-r1                       >= 5.0.2-r1

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

Hamid Ebadi discovered a boundary error in the
intT1_EnvGetCompletePath() function which can lead to a buffer overflow
when processing an overly long filename.

Impact
======

A remote attacker could entice a user to open a font file with a
specially crafted filename, possibly leading to the execution of
arbitrary code with the privileges of the user running the application
using T1Lib.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All T1Lib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/t1lib-5.0.2-r1"

References
==========

  [ 1 ] CVE-2007-4033
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4033

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

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

  http://security.gentoo.org/glsa/glsa-200710-12.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
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