full-disclosure - [ GLSA 200710-12 ] T1Lib: Buffer overflow

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Date: Sat, 13 Oct 2007 00:08:59 +0200
From: Pierre-Yves Rofes <py@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200710-12 ] T1Lib: Buffer overflow

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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@...too.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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