Home / mailings [gentoo-announce] [ GLSA 202210-12 ] Lighttpd: Denial of Service
Posted on 31 October 2022
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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
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