oss-security - [OSSA 2013-026] Potential denial of service on Nova when using Qpid (CVE-2013-4261)

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Date: Thu, 12 Sep 2013 17:20:29 +0200
From: Thierry Carrez <thierry@...nstack.org>
To: Open Source Security <oss-security@...ts.openwall.com>
Subject: [OSSA 2013-026] Potential denial of service on Nova when using Qpid
 (CVE-2013-4261)

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OpenStack Security Advisory: 2013-026
CVE: CVE-2013-4261
Date: September 12, 2013
Title: Potential denial of service on Nova when using Qpid
Reporter: Jaroslav Henner (Red Hat)
Products: Nova
Affects: Folsom, Grizzly

Description:
Jaroslav Henner from Red Hat reported a vulnerability in Nova when using
Apache Qpid as the RPC backend. By sending any random text longer than
65K characters to an instance console and requesting the console log
contents through the API, an authenticated user may disrupt the
nova-compute node his instance is running on. This vulnerability could
be leveraged in a Denial of Service attack against the cloud provider.
Only Folsom and Grizzly setups using Qpid as their RPC backend are
affected. Havana setups, or setups using other RPC backends (like
RabbitMQ), are all unaffected.

Grizzly fix:
https://review.openstack.org/#/c/43303/

Folsom fix:
https://review.openstack.org/#/c/45426/

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4261
https://bugs.launchpad.net/nova/+bug/1215091

Regards,

- -- 
Thierry Carrez
OpenStack Vulnerability Management Team
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