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Gentoo Linux Security Advisory                           GLSA 200408-10
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: gv: Exploitable Buffer Overflow
      Date: August 12, 2004
      Bugs: #59385
        ID: 200408-10

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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.cgi?name=CAN-2002-0838

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

    https://security.gentoo.org/glsa/200408-10

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 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.

https://creativecommons.org/licenses/by-sa/1.0/
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