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Bug 769770 - (CVE-2011-4905) CVE-2011-4905 ActiveMQ: flaw within failover mechanism when handling openwire requests can lead to DoS
CVE-2011-4905 ActiveMQ: flaw within failover mechanism when handling openwire...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20110422,repor...
: Security
Depends On:
Blocks: 769771
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Reported: 2011-12-22 02:07 EST by Vincent Danen
Modified: 2012-01-03 22:19 EST (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-01-03 22:19:55 EST
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Description Vincent Danen 2011-12-22 02:07:23 EST 
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 2012-01-03 22:19:55 EST 
Statement:

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