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

Synopsis:          Moderate: ruby security update
Advisory ID:       RHSA-2013:0611-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-0611.html
Issue date:        2013-03-07
CVE Names:         CVE-2013-1821 
=====================================================================

1. Summary:

Updated ruby packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

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:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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.

It was discovered that Ruby's REXML library did not properly restrict XML
entity expansion. An attacker could use this flaw to cause a denial of
service by tricking a Ruby application using REXML to read text nodes from
specially-crafted XML content, which will result in REXML consuming large
amounts of system memory. (CVE-2013-1821)

All users of Ruby are advised to upgrade to these updated packages, which
contain backported patches to resolve 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/knowledge/articles/11258

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

914716 - CVE-2013-1821 ruby: entity expansion DoS vulnerability in REXML

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ruby-1.8.5-29.el5_9.src.rpm

i386:
ruby-1.8.5-29.el5_9.i386.rpm
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-docs-1.8.5-29.el5_9.i386.rpm
ruby-irb-1.8.5-29.el5_9.i386.rpm
ruby-libs-1.8.5-29.el5_9.i386.rpm
ruby-rdoc-1.8.5-29.el5_9.i386.rpm
ruby-ri-1.8.5-29.el5_9.i386.rpm
ruby-tcltk-1.8.5-29.el5_9.i386.rpm

x86_64:
ruby-1.8.5-29.el5_9.x86_64.rpm
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-debuginfo-1.8.5-29.el5_9.x86_64.rpm
ruby-docs-1.8.5-29.el5_9.x86_64.rpm
ruby-irb-1.8.5-29.el5_9.x86_64.rpm
ruby-libs-1.8.5-29.el5_9.i386.rpm
ruby-libs-1.8.5-29.el5_9.x86_64.rpm
ruby-rdoc-1.8.5-29.el5_9.x86_64.rpm
ruby-ri-1.8.5-29.el5_9.x86_64.rpm
ruby-tcltk-1.8.5-29.el5_9.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ruby-1.8.5-29.el5_9.src.rpm

i386:
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-devel-1.8.5-29.el5_9.i386.rpm
ruby-mode-1.8.5-29.el5_9.i386.rpm

x86_64:
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-debuginfo-1.8.5-29.el5_9.x86_64.rpm
ruby-devel-1.8.5-29.el5_9.i386.rpm
ruby-devel-1.8.5-29.el5_9.x86_64.rpm
ruby-mode-1.8.5-29.el5_9.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ruby-1.8.5-29.el5_9.src.rpm

i386:
ruby-1.8.5-29.el5_9.i386.rpm
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-devel-1.8.5-29.el5_9.i386.rpm
ruby-docs-1.8.5-29.el5_9.i386.rpm
ruby-irb-1.8.5-29.el5_9.i386.rpm
ruby-libs-1.8.5-29.el5_9.i386.rpm
ruby-mode-1.8.5-29.el5_9.i386.rpm
ruby-rdoc-1.8.5-29.el5_9.i386.rpm
ruby-ri-1.8.5-29.el5_9.i386.rpm
ruby-tcltk-1.8.5-29.el5_9.i386.rpm

ia64:
ruby-1.8.5-29.el5_9.ia64.rpm
ruby-debuginfo-1.8.5-29.el5_9.ia64.rpm
ruby-devel-1.8.5-29.el5_9.ia64.rpm
ruby-docs-1.8.5-29.el5_9.ia64.rpm
ruby-irb-1.8.5-29.el5_9.ia64.rpm
ruby-libs-1.8.5-29.el5_9.ia64.rpm
ruby-mode-1.8.5-29.el5_9.ia64.rpm
ruby-rdoc-1.8.5-29.el5_9.ia64.rpm
ruby-ri-1.8.5-29.el5_9.ia64.rpm
ruby-tcltk-1.8.5-29.el5_9.ia64.rpm

ppc:
ruby-1.8.5-29.el5_9.ppc.rpm
ruby-debuginfo-1.8.5-29.el5_9.ppc.rpm
ruby-debuginfo-1.8.5-29.el5_9.ppc64.rpm
ruby-devel-1.8.5-29.el5_9.ppc.rpm
ruby-devel-1.8.5-29.el5_9.ppc64.rpm
ruby-docs-1.8.5-29.el5_9.ppc.rpm
ruby-irb-1.8.5-29.el5_9.ppc.rpm
ruby-libs-1.8.5-29.el5_9.ppc.rpm
ruby-libs-1.8.5-29.el5_9.ppc64.rpm
ruby-mode-1.8.5-29.el5_9.ppc.rpm
ruby-rdoc-1.8.5-29.el5_9.ppc.rpm
ruby-ri-1.8.5-29.el5_9.ppc.rpm
ruby-tcltk-1.8.5-29.el5_9.ppc.rpm

s390x:
ruby-1.8.5-29.el5_9.s390x.rpm
ruby-debuginfo-1.8.5-29.el5_9.s390.rpm
ruby-debuginfo-1.8.5-29.el5_9.s390x.rpm
ruby-devel-1.8.5-29.el5_9.s390.rpm
ruby-devel-1.8.5-29.el5_9.s390x.rpm
ruby-docs-1.8.5-29.el5_9.s390x.rpm
ruby-irb-1.8.5-29.el5_9.s390x.rpm
ruby-libs-1.8.5-29.el5_9.s390.rpm
ruby-libs-1.8.5-29.el5_9.s390x.rpm
ruby-mode-1.8.5-29.el5_9.s390x.rpm
ruby-rdoc-1.8.5-29.el5_9.s390x.rpm
ruby-ri-1.8.5-29.el5_9.s390x.rpm
ruby-tcltk-1.8.5-29.el5_9.s390x.rpm

x86_64:
ruby-1.8.5-29.el5_9.x86_64.rpm
ruby-debuginfo-1.8.5-29.el5_9.i386.rpm
ruby-debuginfo-1.8.5-29.el5_9.x86_64.rpm
ruby-devel-1.8.5-29.el5_9.i386.rpm
ruby-devel-1.8.5-29.el5_9.x86_64.rpm
ruby-docs-1.8.5-29.el5_9.x86_64.rpm
ruby-irb-1.8.5-29.el5_9.x86_64.rpm
ruby-libs-1.8.5-29.el5_9.i386.rpm
ruby-libs-1.8.5-29.el5_9.x86_64.rpm
ruby-mode-1.8.5-29.el5_9.x86_64.rpm
ruby-rdoc-1.8.5-29.el5_9.x86_64.rpm
ruby-ri-1.8.5-29.el5_9.x86_64.rpm
ruby-tcltk-1.8.5-29.el5_9.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-2013-1821.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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