Updated ruby packages that fix various security issues are now available for Red Hat Enterprise Linux 2.1. A number of flaws were found in the safe-level restrictions in Ruby. It was possible for an attacker to create a carefully crafted malicious script that can allow the bypass of certain safe-level restrictions. (CVE-2008-3655) This update has been rated as having moderate security impact by the Red Hat Security Response Team.

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

Synopsis:          Moderate: ruby security update
Advisory ID:       RHSA-2008:0895-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2008:0895.html
Issue date:        2008-10-21
CVE Names:         CVE-2008-3443 CVE-2008-3655 
====================================================================
1. Summary:

Updated ruby packages that fix various security issues are now available
for Red Hat Enterprise Linux 2.1.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1  - i386
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Description:

Ruby is an interpreted scripting language for quick and easy
object-oriented programming.

A number of flaws were found in the safe-level restrictions in Ruby. It
was possible for an attacker to create a carefully crafted malicious script
that can allow the bypass of certain safe-level restrictions. (CVE-2008-3655)

A denial of service flaw was found in Ruby's regular expression engine. If
a Ruby script tried to process a large amount of data via a regular
expression, it could cause Ruby to enter an infinite-loop and crash.
(CVE-2008-3443)

Users of ruby should upgrade to these updated packages, which contain
backported patches to resolve these issues.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at

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

458948 - CVE-2008-3655 ruby: multiple insufficient safe mode restrictions
459266 - CVE-2008-3443 ruby: Memory allocation failure in Ruby regex engine (remotely exploitable DoS)

6. Package List:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

Source:

i386:
irb-1.6.4-7.el2.i386.rpm
ruby-1.6.4-7.el2.i386.rpm
ruby-devel-1.6.4-7.el2.i386.rpm
ruby-docs-1.6.4-7.el2.i386.rpm
ruby-libs-1.6.4-7.el2.i386.rpm
ruby-tcltk-1.6.4-7.el2.i386.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:

i386:
irb-1.6.4-7.el2.i386.rpm
ruby-1.6.4-7.el2.i386.rpm
ruby-devel-1.6.4-7.el2.i386.rpm
ruby-docs-1.6.4-7.el2.i386.rpm
ruby-libs-1.6.4-7.el2.i386.rpm
ruby-tcltk-1.6.4-7.el2.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

Source:

i386:
irb-1.6.4-7.el2.i386.rpm
ruby-1.6.4-7.el2.i386.rpm
ruby-devel-1.6.4-7.el2.i386.rpm
ruby-docs-1.6.4-7.el2.i386.rpm
ruby-libs-1.6.4-7.el2.i386.rpm
ruby-tcltk-1.6.4-7.el2.i386.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.cve.org/CVERecord?id=CVE-2008-3443
https://www.cve.org/CVERecord?id=CVE-2008-3655
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

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

Copyright 2008 Red Hat, Inc.