Bug 783487 (AST-2012-001, CVE-2012-0885)

Summary:	CVE-2012-0885 asterisk: Remote DoS while processing crypto line for media stream with non-existing RTP
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	itamar, jeff, rbryant
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	asterisk 1.8.8.2, asterisk 10.0.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-08-07 07:44:58 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:	783490, 783491
Bug Blocks:

Description Jan Lieskovsky 2012-01-20 15:43:48 UTC

A denial of service flaw was found in the way asterisk processed certain requests to negotiate secure video stream, when the res_srtp Asterisk module has been loaded and video support has not been enabled. A remote attacker could provide a specially-crafted media stream negotiation request, which once processed by Asterisk would lead to asterisk daemon crash by processing crypto line for such media stream.

References:
[1] http://downloads.asterisk.org/pub/security/AST-2012-001.html
[2] https://issues.asterisk.org/jira/browse/ASTERISK-19202

Upstream patch against the v1.8.x branch:
[3] http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff

Upstream patch against the v1.10.x branch:
[4] http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff

Comment 1 Jan Lieskovsky 2012-01-20 15:48:06 UTC

This issue affects the versions of the asterisk package, as shipped with Fedora release of 15 and 16. Please schedule an update.

--

This issue affects the version of the asterisk package, as shipped with Fedora EPEL 6 release. Please schedule an update.

Comment 2 Jan Lieskovsky 2012-01-20 15:48:52 UTC

CVE Request:
[5] http://www.openwall.com/lists/oss-security/2012/01/20/16

Comment 3 Jan Lieskovsky 2012-01-20 15:49:45 UTC

Created asterisk tracking bugs for this issue

Affects: fedora-all [bug 783490]
Affects: epel-6 [bug 783491]

Comment 4 Jan Lieskovsky 2012-01-20 16:03:40 UTC

The CVE identifier of CVE-2012-0885 has been assigned to this issue:
[6] http://www.openwall.com/lists/oss-security/2012/01/20/18