[ GLSA 200411-23 ] Ruby: Denial of Service issue

[Thierry Carrez <koon () gentoo org>]

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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

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