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TUCoPS :: Linux :: Gentoo :: tb12975.htm

T1Lib: Buffer overflow



T1Lib: Buffer overflow
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@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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