Bug 2185911 (CVE-2023-1981)

Summary:	CVE-2023-1981 avahi: avahi-daemon can be crashed via DBus
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	caswilli, dffrench, fjansen, gzaronik, hbraun, hkataria, jburrell, kaycoth, kshier, kyoshida, msekleta, ngough, pemensik, rgodfrey, sthirugn, vkrizan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the avahi library. This flaw allows an unprivileged user to make a dbus call, causing the avahi daemon to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2186688, 2185912, 2186689
Bug Blocks:	2185913

Description Pedro Sampaio 2023-04-11 14:53:48 UTC

It was discovered that the avahi deamon can be locally crashed by a dbus call made by an unprivileged user, causing a denial of service.

References:

https://github.com/lathiat/avahi/issues/375

Comment 1 Pedro Sampaio 2023-04-11 14:54:04 UTC

Created avahi tracking bugs for this issue:

Affects: fedora-all [bug 2185912]