Bug 2045091 (CVE-2022-22707)

Summary:	CVE-2022-22707 lighttpd: mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
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, hello, 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:	2022-01-25 16:00:47 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:	2045093, 2045092
Bug Blocks:

Description Marian Rehak 2022-01-25 15:26:30 UTC

In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

Reference:

https://redmine.lighttpd.net/issues/3134
https://www.debian.org/security/2022/dsa-5040

Comment 1 Marian Rehak 2022-01-25 15:26:48 UTC

Created lighttpd tracking bugs for this issue:

Affects: epel-all [bug 2045093]
Affects: fedora-all [bug 2045092]

Comment 2 Product Security DevOps Team 2022-01-25 16:00:45 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.