[ GLSA 200408-10 ] gv: Exploitable Buffer Overflow

[pahud]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200408-10
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: gv: Exploitable Buffer Overflow
Date: August 12, 2004
Bugs: #59385
ID: 200408-10

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

Synopsis
========

gv contains an exploitable buffer overflow that allows an attacker to
execute arbitrary code.

Background
==========

gv is a PostScript and PDF viewer for X which provides a user interface
for the ghostscript interpreter.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/gv <= 3.5.8-r3 >= 3.5.8-r4

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

gv contains a buffer overflow vulnerability where an unsafe sscanf()
call is used to interpret PDF and PostScript files.

Impact
======

By enticing a user to view a malformed PDF or PostScript file an
attacker could execute arbitrary code with the permissions of the user
running gv.

Workaround
==========

There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version of gv.

Resolution
==========

All gv users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=app-text/gv-3.5.8-r4"
# emerge ">=app-text/gv-3.5.8-r4"

References
==========

[ 1 ] CAN-2002-0838
http://cve.mitre.org/cgi-bin/cvename.cg ... -2002-0838

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

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

http://security.gentoo.org/glsa/glsa-200408-10.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 2004 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/1.0
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFBG1VzzKC5hMHO6rkRAnvTAJ4qHGounyrnZD4LdkcYK+edrKDlkgCeJgjz
VixGMT9TOgt24mDQyFJa018=
=FofW
-----END PGP SIGNATURE-----