Bug 891649 (CVE-2012-5977)

Summary:	CVE-2012-5977 asterisk: Denial of service through exploitation of device state caching (AST-2012-015)
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	itamar, jeff, lmadsen, rbryant
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-01-30 07:40:25 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:	891650, 891651
Bug Blocks:

Description Jan Lieskovsky 2013-01-03 14:30:55 UTC

A denial of service flaw was found in the way Asterisk, an open-source PBX software, performed management of its internal device cache in certain circumstances. A remote attacker could use this flaw to cause the asterisk executable to consume excessive amount of system resources via repeated anonymous calls with different sources of the particular anonymous call (forcing the asterisk binary continually to add new devices into its device cache).

References:
[1] http://downloads.asterisk.org/pub/security/AST-2012-015.html

Upstream patches:
[2] http://downloads.asterisk.org/pub/security/AST-2012-015-1.8.11.diff
[3] http://downloads.asterisk.org/pub/security/AST-2012-015-1.8.diff
[4] http://downloads.asterisk.org/pub/security/AST-2012-015-10.diff
[5] http://downloads.asterisk.org/pub/security/AST-2012-015-11.diff

Comment 1 Jan Lieskovsky 2013-01-03 14:32:07 UTC

This issue affects the versions of the asterisk package, as shipped with Fedora release of 16 and 17. Please schedule an update.

--

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

Comment 2 Jan Lieskovsky 2013-01-03 14:34:12 UTC

Created asterisk tracking bugs for this issue

Affects: fedora-all [bug 891650]
Affects: epel-6 [bug 891651]

Comment 3 Fedora Update System 2013-01-30 00:33:00 UTC

asterisk-11.2.0-1.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2013-01-30 00:36:37 UTC

asterisk-10.12.0-1.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2013-01-30 00:55:17 UTC

asterisk-1.8.20.0-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.