[ GLSA 200411-02 ] Cherokee: Format string vulnerability

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200411-02
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Cherokee: Format string vulnerability
      Date: November 01, 2004
      Bugs: #67667
        ID: 200411-02

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Synopsis
========

Cherokee contains a format string vulnerability that could lead to
denial of service or the execution of arbitary code.

Background
==========

Cherokee is an extra-light web server.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  www-servers/cherokee      <= 0.4.17                   >= 0.4.17.1

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

Florian Schilhabel from the Gentoo Linux Security Audit Team found a
format string vulnerability in the cherokee_logger_ncsa_write_string()
function.

Impact
======

Using a specially crafted URL when authenticating via auth_pam, a
malicious user may be able to crash the server or execute arbitrary
code on the target machine with permissions of the user running
Cherokee.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cherokee users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/cherokee-0.4.17.1"

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

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

  http://security.gentoo.org/glsa/glsa-200411-02.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

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