Bug 1306617 (CVE-2016-2232)

Summary:	CVE-2016-2232 asterisk: remote crash vulnerability when receiving UDPTL FAX data (AST-2016-003)
Product:	[Other] Security Response	Reporter:	Martin Prpič <mprpic>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	g.devel, itamar, jsmith.fedora, lmadsen, rbryant
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	asterisk 11.21.1, asterisk 13.7.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-12 13:04:03 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:	1306619, 1306620
Bug Blocks:

Description Martin Prpič 2016-02-11 13:06:02 UTC

The following flaw was found in Asterisk:

If no UDPTL packets are lost there is no problem. However, a lost packet causes Asterisk to use the available error correcting redundancy packets. If those redundancy packets have zero length then Asterisk uses an uninitialized buffer pointer and length value which can cause invalid memory accesses later when the packet is copied.

External References:

http://downloads.asterisk.org/pub/security/AST-2016-003.html

Comment 1 Martin Prpič 2016-02-11 13:09:33 UTC

Created asterisk tracking bugs for this issue:

Affects: fedora-all [bug 1306619]
Affects: epel-6 [bug 1306620]

Comment 2 Jared Smith 2016-02-12 15:28:23 UTC

This has been corrected in Rawhide with the 13.7.2 release, and also pushed to the Fedora 23 and Fedora 22 testing-updates repositories.

I'm working on updating the EPEL 6 package now.

Comment 3 Andrej Nemec 2016-02-16 08:12:35 UTC

CVE assignment information from upstream:

http://downloads.asterisk.org/pub/security/AST-2016-003.html

Comment 4 Product Security DevOps Team 2019-07-12 13:04:03 UTC

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