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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: ruby193-ruby security update
Advisory ID:       RHSA-2013:1523-01
Product:           Red Hat OpenStack
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-1523.html
Issue date:        2013-11-14
CVE Names:         CVE-2013-4287 
=====================================================================

1. Summary:

Updated ruby193-ruby packages that fix one security issue are now available
for Red Hat OpenStack 3.0.

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. Relevant releases/architectures:

OpenStack 3 - noarch, x86_64

3. Description:

Ruby is an extensible, interpreted, object-oriented, scripting language. It
has features to process text files and to do system management tasks.
RubyGems is the Ruby standard for publishing and managing third-party
libraries.

It was discovered that the rubygems API validated version strings using an
unsafe regular expression. An application making use of this API to process
a version string from an untrusted source could be vulnerable to a denial
of service attack through CPU exhaustion. (CVE-2013-4287)

Red Hat would like to thank Rubygems upstream for reporting this
issue. Upstream acknowledges Damir Sharipov as the original reporter.

Users of Red Hat OpenStack 3.0 are advised to upgrade to these updated
packages, which correct this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

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

1002364 - CVE-2013-4287 rubygems: version regex algorithmic complexity
 vulnerability

6. Package List:

OpenStack 3:

Source:
ruby193-ruby-1.9.3.448-40.el6.src.rpm
ruby193-rubygems-1.8.24-9.el6ost.src.rpm

noarch:
ruby193-ruby-irb-1.9.3.448-40.el6.noarch.rpm
ruby193-rubygem-minitest-2.5.1-40.el6.noarch.rpm
ruby193-rubygem-rake-0.9.2.2-40.el6.noarch.rpm
ruby193-rubygems-1.8.24-9.el6ost.noarch.rpm
ruby193-rubygems-devel-1.8.24-9.el6ost.noarch.rpm

x86_64:
ruby193-ruby-1.9.3.448-40.el6.x86_64.rpm
ruby193-ruby-debuginfo-1.9.3.448-40.el6.x86_64.rpm
ruby193-ruby-devel-1.9.3.448-40.el6.x86_64.rpm
ruby193-ruby-doc-1.9.3.448-40.el6.x86_64.rpm
ruby193-ruby-libs-1.9.3.448-40.el6.x86_64.rpm
ruby193-ruby-tcltk-1.9.3.448-40.el6.x86_64.rpm
ruby193-rubygem-bigdecimal-1.1.0-40.el6.x86_64.rpm
ruby193-rubygem-io-console-0.3-40.el6.x86_64.rpm
ruby193-rubygem-json-1.5.5-40.el6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2013-4287.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2013 Red Hat, Inc.
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