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Gentoo Linux Security Advisory                           GLSA 200411-23
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Ruby: Denial of Service issue
      Date: November 16, 2004
      Bugs: #69985
        ID: 200411-23

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Synopsis
========

The CGI module in Ruby can be sent into an infinite loop, resulting in
a Denial of Service condition.

Background
==========

Ruby is an interpreted scripting language for quick and easy
object-oriented programming. Ruby's CGI module can be used to build web
applications.

Affected packages
=================

    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  dev-lang/ruby     < 1.8.2_pre3                      *>= 1.6.8-r12
                                                         >= 1.8.2_pre3

Description
===========

Ruby's developers found and fixed an issue in the CGI module that can
be triggered remotely and cause an infinite loop.

Impact
======

A remote attacker could trigger the vulnerability through an exposed
Ruby web application and cause the server to use unnecessary CPU
resources, potentially resulting in a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Ruby 1.6.x users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.6.8-r12"

All Ruby 1.8.x users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.2_pre3"

References
==========

  [ 1 ] CAN-2004-0983
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0983

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200411-23.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0