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Gentoo Linux Security Advisory                           GLSA 200411-31
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                                             http://security.gentoo.org/
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  Severity: Normal
     Title: ProZilla: Multiple vulnerabilities
      Date: November 23, 2004
      Bugs: #70090
        ID: 200411-31

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Synopsis
========

ProZilla contains several buffer overflow vulnerabilities that can be
exploited by a malicious server to execute arbitrary code with the
rights of the user running ProZilla.

Background
==========

ProZilla is a download accelerator for Linux.

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

    -------------------------------------------------------------------
     Package              /   Vulnerable   /                Unaffected
    -------------------------------------------------------------------
  1  www-client/prozilla      <= 1.3.6-r2                  Vulnerable!
    -------------------------------------------------------------------
     NOTE: Certain packages are still vulnerable. Users should migrate
           to another package if one is available or wait for the
           existing packages to be marked stable by their
           architecture maintainers.

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

ProZilla contains several exploitable buffer overflows in the code
handling the network protocols.

Impact
======

A remote attacker could setup a malicious server and entice a user to
retrieve files from that server using ProZilla. This could lead to the
execution of arbitrary code with the rights of the user running
ProZilla.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

Currently, there is no released version of ProZilla that contains a fix
for these issues. The original author did not respond to our queries,
the code contains several other problems and more secure alternatives
exist. Therefore, the ProZilla package has been hard-masked prior to
complete removal from Portage, and current users are advised to unmerge
the package.

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

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

   http://security.gentoo.org/glsa/glsa-200411-31.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/2.0