Vulnerability Note VU#684913

Ruby library contains vulnerable default value

Overview

Ruby includes a vulnerable default value that may be used to bypass security restrictions and execute arbitrary code.

I. Description

Ruby is vulnerable to an attack on applications using the XML-RPC services via XMLRPC.iPIMethods, due to an insecure default value in utils.rb. Any program or application using the XML-RPC services provided by XMLRPC.iPIMethods may be affected. Due to the vulnerability occurring in code that is typically used to provide remote services, this may allow a remote attacker to execute arbitrary code.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary code.

III. Solution

Apply an update

Please see the Ruby XMLRPC.iPIMethods Vulnerability note for more information, or contact your vendor for an update.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Red Hat, Inc.	Vulnerable	18-Oct-2005
Ruby	Vulnerable	3-Oct-2005

References

http://secunia.com/advisories/15767/
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/5237
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=315064
http://www.securityfocus.com/bid/14016
https://rhn.redhat.com/errata/RHSA-2005-543.html
http://www.auscert.org.au/5356
http://www.auscert.org.au/5509

Credit

Thanks to Nobuhiro IMAI for reporting this vulnerability.

This document was written by Ken MacInnis.

Other Information

Date Public:	2005-06-20
Date First Published:	2005-10-03
Date Last Updated:	2005-10-18
CERT Advisory:
CVE-ID(s):	CAN-2005-1992
NVD-ID(s):	CAN-2005-1992
US-CERT Technical Alerts:
Metric:	9.11
Document Revision:	19

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Produced 2005 by US-CERT, a government organization
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