Gentoo: o3read Buffer overflow during file conversion
Posted by Joe Shakespeare   
Gentoo A buffer overflow in o3read allows an attacker to execute arbitrary code by way of a specially crafted XML file.

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Gentoo Linux Security Advisory                           GLSA 200501-20
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: o3read: Buffer overflow during file conversion
      Date: January 11, 2005
      Bugs: #74478
        ID: 200501-20

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Synopsis
========

A buffer overflow in o3read allows an attacker to execute arbitrary
code by way of a specially crafted XML file.

Background
==========

o3read is a standalone converter for OpenOffice.org files. It allows a
user to dump the contents tree (o3read) and convert to plain text
(o3totxt) or to HTML (o3tohtml) Writer and Calc files.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  app-text/o3read      <= 0.0.3                            >= 0.0.4

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

Wiktor Kopec discovered that the parse_html function in o3read.c copies
any number of bytes into a 1024-byte t[] array.

Impact
======

Using a specially crafted file, possibly delivered by e-mail or over
the Web, an attacker may execute arbitrary code with the permissions of
the user running o3read.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All o3read users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/o3read-0.0.4"

References
==========

  [ 1 ] CAN-2004-1288
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1288
  [ 2 ] Wiktor Kopec advisory
        http://tigger.uic.edu/~jlongs2/holes/o3read.txt

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

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

  http://security.gentoo.org/glsa/glsa-200501-20.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 2005 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/2.0