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Sicherheit: Denial of Service in Fuse MQ Enterprise
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Name: Denial of Service in Fuse MQ Enterprise
ID: RHSA-2012:1605-01
Distribution: Red Hat
Plattformen: Red Hat Fuse Enterprise Middleware
Datum: Fr, 21. Dezember 2012, 15:00
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4461


Red Hat Security Advisory

Synopsis: Moderate: Fuse MQ Enterprise 7.1.0 update
Advisory ID: RHSA-2012:1605-01
Product: Fuse Enterprise Middleware
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1605.html
Issue date: 2012-12-21
CVE Names: CVE-2011-4461

1. Summary:

Fuse MQ Enterprise 7.1.0, which fixes one security issue, various bugs, and
adds enhancements, is now available from the Red Hat Customer Portal.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Description:

Fuse MQ Enterprise, based on Apache ActiveMQ, is a standards compliant
messaging system that is tailored for use in mission critical applications.

This release of Fuse MQ Enterprise 7.1.0 serves as a replacement for Fuse
MQ Enterprise 7.0.2, and includes bug fixes and enhancements. Refer to the
Fuse MQ Enterprise 7.1.0 Release Notes for information on the most
significant of these changes. The Release Notes will be available shortly
from https://access.redhat.com/knowledge/docs/

The following security issue is also fixed with this release:

It was found that the Java hashCode() method implementation was susceptible
to predictable hash collisions. A remote attacker could use this flaw to
cause the Jetty HTTP server (a component of Apache Karaf, used by Fuse MQ
Enterprise) to use an excessive amount of CPU time by sending an HTTP
request with a large number of parameters whose names map to the same hash
value. This update introduces a limit of 1000 on the number of parameters
processed per request to mitigate this issue. (CVE-2011-4461)

Red Hat would like to thank oCERT for reporting this issue. oCERT
acknowledges Julian Wälde and Alexander Klink as the original reporters.

All users of Fuse MQ Enterprise 7.0.2 as provided from the Red Hat Customer
Portal are advised to upgrade to Fuse MQ Enterprise 7.1.0.

3. Solution:

The References section of this erratum contains a download link (you must
log in to download the update).

4. Bugs fixed (http://bugzilla.redhat.com/):

781677 - CVE-2011-4461 jetty: hash table collisions CPU usage DoS

5. References:


6. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2012 Red Hat, Inc.
Version: GnuPG v1.4.4 (GNU/Linux)


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