GLSA 202210-12: Lighttpd: Denial of Service

http://security.gentoo.org/

Severity:	low
Title:	Lighttpd: Denial of Service
Date:	10/31/2022
Bugs:	#869890
ID:	202210-12

Synopsis

A vulnerability has been discovered in lighttpd which could result in denial of service.

Background

Lighttpd is a lightweight high-performance web server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-servers/lighttpd	< 1.4.67	>= 1.4.67	All supported architectures

Description

Lighttpd's mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received.

Impact

An attacker can trigger a denial of service via making Lighttpd try to call an uninitialized function pointer.

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-1.4.67"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202210-12.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.