- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200411-23
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: Ruby: Denial of Service issue
      Date: November 16, 2004
      Bugs: #69985
        ID: 200411-23

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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:

  https://security.gentoo.org/glsa/200411-23

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
https://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.

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