Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                       ESB-2008.0210 -- [UNIX/Linux]
              OpenCA allows Cross site request forgery (XSRF)
                             26 February 2008


        AusCERT Security Bulletin Summary

Product:              OpenCA
Publisher:            US-CERT
Operating System:     UNIX variants (UNIX, Linux, OSX)
Impact:               Cross-site Request Forgery
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-0556

Original Bulletin:    http://www.ciac.org/ciac/bulletins/s-198.shtml

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Vulnerability Note VU#264385

OpenCA allows Cross site request forgery (XSRF)


   OpenCA contains a cross site request forgery (XSRF) vulnerability 
   that may allow an attacker to leverage an administrator's
   credentials to execute activities on the Certification Authority.

I. Description

   The OpenCA PKI Development Project is an open source out-of-the-box 
   Certification Authority (CA). OpenCA includes various web forms
   for executing requests and other activities on the CA such as
   digital certificate issuance. A cross site request forgery (XSRF)
   vulnerability exists in the way OpenCA processes requests executed
   via various forms. By manipulating an administrator who is
   authenticated to the CA via a session cookie to follow a tag
   that contains CA commands, an attacker may be able to successfully
   execute the commands on the CA.

II. Impact

   An authenticated user can be manipulated into executing activities 
   on the CA - such as digital certificate issuance - without
   knowledge or consent.

III. Solution

   This vulnerability has been addressed in Security Advisory 
   AKLINK-SA-2008-001 https://www.cynops.de/advisories/CVE-2008-0556.txt.

Systems Affected

   Vendor       Status          Date Updated
   Open CA      Vulnerable      15-Feb-2008



   This vulnerability was reported by Alexander Klink of Cynops 
   This document was written by Joseph W. Pruszynski.

Other Information

   Date Public              02/13/2008
   Date First Published     02/22/2008 04:41:00 PM
   Date Last Updated        02/25/2008
   CERT Advisory
   CVE Name                 CVE-2008-0556
   US-CERT Technical Alerts
   Metric                   2.39
   Document Revision        15

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