irb, ruby security update

CentOS Errata and Security Advisory CESA-2008:0981

Ruby is an extensible, interpreted, object-oriented, scripting language. It
has features to process text files and to do system management tasks.

Vincent Danen reported, that Red Hat Security Advisory RHSA-2008:0897
did not properly address a denial of service flaw in the WEBrick (Ruby
HTTP server toolkit), known as CVE-2008-3656. This flaw allowed a
remote attacker to send a specially-crafted HTTP request to a WEBrick
server that would cause the server to use excessive CPU time. This
update properly addresses this flaw. (CVE-2008-4310)

All Ruby users should upgrade to these updated packages, which contain a
correct patch that resolves this issue.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2008-December/077627.html
https://lists.centos.org/pipermail/centos-announce/2008-December/077628.html
https://lists.centos.org/pipermail/centos-announce/2008-December/077635.html
https://lists.centos.org/pipermail/centos-announce/2008-December/077636.html
https://lists.centos.org/pipermail/centos-announce/2008-December/077676.html
https://lists.centos.org/pipermail/centos-announce/2008-December/077677.html

Affected packages:
irb
ruby
ruby-devel
ruby-docs
ruby-irb
ruby-libs
ruby-mode
ruby-rdoc
ruby-ri
ruby-tcltk

Upstream details at:
https://access.redhat.com/errata/RHSA-2008:0981