GLSA 200705-07: Lighttpd: Two Denials of Service

http://security.gentoo.org/

Severity:	normal
Title:	Lighttpd: Two Denials of Service
Date:	05/07/2007
Bugs:	#174043
ID:	200705-07

Synopsis

Two vulnerabilities have been discovered in Lighttpd, each allowing for a Denial of Service.

Background

Lighttpd is a lightweight HTTP web server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-servers/lighttpd	< 1.4.14	>= 1.4.14	All supported architectures

Description

Robert Jakabosky discovered an infinite loop triggered by a connection abort when Lighttpd processes carriage return and line feed sequences. Marcus Rueckert discovered a NULL pointer dereference when a server running Lighttpd tries to access a file with a mtime of 0.

Impact

A remote attacker could upload a specially crafted file to the server or send a specially crafted request and then abort the connection, possibly resulting in a crash or a Denial of Service by CPU consumption.

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-1.4.14"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200705-07.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.