GLSA 200410-21: Apache 2, mod_ssl: Bypass of SSLCipherSuite directive

http://security.gentoo.org/

Severity:	low
Title:	Apache 2, mod_ssl: Bypass of SSLCipherSuite directive
Date:	10/21/2004
Bugs:	#66807
ID:	200410-21

Synopsis

In certain configurations, it can be possible to bypass restrictions set by the "SSLCipherSuite" directive of mod_ssl.

Background

The Apache HTTP server is one of the most popular web servers on the internet. mod_ssl provides SSL v2/v3 and TLS v1 support for Apache 1.3 and is also included in Apache 2.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-servers/apache	< 2.0.52	>= 2.0.52	All supported architectures
net-www/mod_ssl	< 2.8.20	>= 2.8.20	All supported architectures

Description

A flaw has been found in mod_ssl where the "SSLCipherSuite" directive could be bypassed in certain configurations if it is used in a directory or location context to restrict the set of allowed cipher suites.

Impact

A remote attacker could gain access to a location using any cipher suite allowed by the server/virtual host configuration, disregarding the restrictions by "SSLCipherSuite" for that location.

Workaround

There is no known workaround at this time.

Resolution

All Apache 2 users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=www-servers/apache-2.0.52"
    # emerge ">=www-servers/apache-2.0.52"

All mod_ssl users should upgrade to the latest version:


    # emerge sync

    # emerge -pv ">=net-www/mod_ssl-2.8.20"
    # emerge ">=net-www/mod_ssl-2.8.20"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200410-21.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.