Bug 2126414 (CVE-2022-37797)

Summary:	CVE-2022-37797 www-servers/lighttpd: DoS via uninitialized function pointer
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	gwync, matthias, rhbugs
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-11-26 10:28:25 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2126415, 2126416
Bug Blocks:

Description ybuenos 2022-09-13 11:57:14 UTC

In lighttpd 1.4.63,65,66 mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition.

https://redmine.lighttpd.net/issues/3165

Comment 1 ybuenos 2022-09-13 11:57:31 UTC

Created lighttpd tracking bugs for this issue:

Affects: epel-all [bug 2126415]
Affects: fedora-all [bug 2126416]

Comment 2 Product Security DevOps Team 2022-11-26 10:28:23 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.