GLSA 200407-18: mod_ssl: Format string vulnerability
Posted on: 07/22/2004 11:01 AM

A mod_ssl update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200407-18
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http://security.gentoo.org/
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Severity: Normal
Title: mod_ssl: Format string vulnerability
Date: July 22, 2004
Bugs: #57379
ID: 200407-18

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Synopsis
=======

A bug in mod_ssl may allow a remote attacker to execute arbitrary code when Apache is configured to use mod_ssl and mod_proxy.

Background
=========

mod_ssl provides Secure Sockets Layer encryption and authentication to Apache 1.3.

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

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Package / Vulnerable / Unaffected
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1 net-www/mod_ssl <= 2.8.18 >= 2.8.19

Description
==========

A bug in ssl_engine_ext.c makes mod_ssl vulnerable to a ssl_log() related format string vulnerability in the mod_proxy hook functions.

Impact
=====

Given the right server configuration, an attacker could execute code as the user running Apache, usually "apache".

Workaround
=========

A server should not be vulnerable if it is not using both mod_ssl and mod_proxy. Otherwise there is no workaround other than to disable mod_ssl.

Resolution
=========

All mod_ssl users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=net-www/mod_ssl-2.8.19"
# emerge ">=net-www/mod_ssl-2.8.19"

References
=========

[ 1 ] mod_ssl Announcement
http://marc.theaimsgroup.com/?l=apache-modsslm=109001100906749w=2

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

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

http://security.gentoo.org/glsa/glsa-200407-18.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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