GLSA 200708-11: Lighttpd: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Lighttpd: Multiple vulnerabilities
Date:	08/16/2007
Bugs:	#185442
ID:	200708-11

Synopsis

Several vulnerabilities were reported in Lighttpd, most of them allowing a Denial of Service and potentially the remote execution of arbitrary code.

Background

Lighttpd is a lightweight HTTP web server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-servers/lighttpd	< 1.4.16	>= 1.4.16	All supported architectures

Description

Stefan Esser discovered errors with evidence of memory corruption in the code parsing the headers. Several independent researchers also reported errors involving the handling of HTTP headers, the mod_auth and mod_scgi modules, and the limitation of active connections.

Impact

A remote attacker can trigger any of these vulnerabilities by sending malicious data to the server, which may lead to a crash or memory exhaustion, and potentially the execution of arbitrary code. Additionally, access-deny settings can be evaded by appending a final / to a URL.

Workaround

There is no known workaround at this time.

Resolution

All Lighttpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.16"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200708-11.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.