[ GLSA 200411-02 ] Cherokee: Format string vulnerability

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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_at_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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