GLSA 200407-18: mod_ssl: Format string vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	mod_ssl: Format string vulnerability
Date:	07/22/2004
Bugs:	#57379
ID:	200407-18

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

Package	Vulnerable	Unaffected	Architecture(s)
net-www/mod_ssl	<= 2.8.18	>= 2.8.19	All supported architectures

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

mod_ssl Announcement

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 https://bugs.gentoo.org.