Bug 769770 (CVE-2011-4905)

Summary:	CVE-2011-4905 ActiveMQ: flaw within failover mechanism when handling openwire requests can lead to DoS
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	brms-jira, djorm, tkirby
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2012-01-04 03:19:55 UTC	Type:	---
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	769771

Description Vincent Danen 2011-12-22 07:07:23 UTC

A flaw in Apache ActiveMQ before 5.6.0 could allow a remote unauthenticated attacker to abuse the 'failover' feature, allowing them to trigger a denial of service against the broker service.  An attacker can issue multiple ActiveMQ openwire connection requests using the string 'failover:tcp://[IP]:61616', and due to the 'failure' mechanism, all TCP connections remain active even if a valid session is not created.  After a few thousand requests, a 'java.net.SocketException: Too many open files' exception is triggered, leading to a freeze or crash of the broker (and possibly connected systems as well).

References:

https://issues.apache.org/jira/browse/AMQ-3294
http://secunia.com/advisories/47112
http://svn.apache.org/viewvc?view=revision&revision=1209700
http://svn.apache.org/viewvc?view=revision&revision=1211844

Comment 1 David Jorm 2012-01-04 03:19:55 UTC

Statement:

Not vulnerable. Apache ActiveMQ is not shipped with any supported Red Hat products.