Bug 1988430 (CVE-2021-31878)

Summary:	CVE-2021-31878 asterisk: Remote Crash Vulnerability in PJSIP channel driver may lead to DoS
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:	bennie.joubert, jsmith.fedora, rbryant
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2021-07-30 19:06:53 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1988431
Bug Blocks:

Description Marian Rehak 2021-07-30 14:11:35 UTC

When Asterisk receives a re-INVITE without SDP after having sent a BYE request a crash will occur. This occurs due to the Asterisk channel no longer being present while code assumes it is.

Upstream Issue:

https://issues.asterisk.org/jira/browse/ASTERISK-29381

Comment 1 Marian Rehak 2021-07-30 14:12:02 UTC

Created asterisk tracking bugs for this issue:

Affects: fedora-all [bug 1988431]

Comment 2 Product Security DevOps Team 2021-07-30 19:06:53 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.