Gentoo 2485 Published by

A Lighttpd security update has been released for Gentoo Linux.



GLSA 202210-12 : Lighttpd: Denial of Service


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Gentoo Linux Security Advisory GLSA 202210-12
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  https://security.gentoo.org/
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Severity: Low
Title: Lighttpd: Denial of Service
Date: October 31, 2022
Bugs: #869890
ID: 202210-12

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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
-------------------------------------------------------------------
1 www-servers/lighttpd < 1.4.67 >= 1.4.67

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
=========
[ 1 ] CVE-2022-37797
  https://nvd.nist.gov/vuln/detail/CVE-2022-37797
[ 2 ] CVE-2022-41556
  https://nvd.nist.gov/vuln/detail/CVE-2022-41556

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/202210-12

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.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

  https://creativecommons.org/licenses/by-sa/2.5