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UNIRAS Brief - 527/05 - Gentoo - Ruby: Arbitrary command execution through XML-RPC [GLSA 200507-10]



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 527/05 dated 12.07.05  Time: 14:55  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====
Gentoo - Ruby: Arbitrary command execution through XML-RPC [GLSA 200507-10]

Detail
====== 

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Gentoo Linux Security Advisory                           GLSA 200507-10
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Ruby: Arbitrary command execution through XML-RPC
      Date: July 11, 2005
      Bugs: #96784
        ID: 200507-10

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Synopsis
========

A vulnerability in XMLRPC.iPIMethods allows remote attackers to execute
arbitrary commands.

Background
==========

Ruby is an interpreted scripting language for quick and easy
object-oriented programming. XML-RPC is a remote procedure call
protocol encoded in XML.

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

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     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  dev-lang/ruby     < 1.8.2-r2                          >= 1.8.2-r2

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

Nobuhiro IMAI reported that an invalid default value in "utils.rb"
causes the security protections of the XML-RPC server to fail.

Impact
======

A remote attacker could exploit this vulnerability to execute arbitrary
commands.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Ruby users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.2-r2"

References
==========

  [ 1 ] CAN-2005-1992
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1992
  [ 2 ] Ruby Security Announcement
        http://www.ruby-lang.org/en/20050701.html

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

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

  http://security.gentoo.org/glsa/glsa-200507-10.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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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UNIRAS wishes to acknowledge the contributions of Gentoo for the information 
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
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not be liable for any loss or damage whatsoever, arising from or in connection 
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and has contacts with other international Incident Response Teams (IRTs) in 
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<End of UNIRAS Briefing>

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