Bug 1937745 (CVE-2021-21375)

Summary:	CVE-2021-21375 pjproject: crash in receiving updated SDP answer after initial SDP negotiation failed
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jsmith.fedora
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:	2021-03-11 17:25:48 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:	1937746, 1937747
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2021-03-11 13:28:32 UTC

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.

Reference:
https://github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvp

Upstream patch:
https://github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365

Comment 1 Guilherme de Almeida Suckevicz 2021-03-11 13:29:27 UTC

Created pjproject tracking bugs for this issue:

Affects: epel-all [bug 1937747]
Affects: fedora-all [bug 1937746]

Comment 2 Product Security DevOps Team 2021-03-11 17:25:48 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.