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AUSCERT External Security Bulletin Redistribution
ESB-2008.0210 -- [UNIX/Linux]
OpenCA allows Cross site request forgery (XSRF)
26 February 2008
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AusCERT Security Bulletin Summary
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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)
Overview
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
References
https://www.cynops.de/advisories/CVE-2008-0556.txt
http://secunia.com/advisories/28951/
http://www.owasp.org/index.php/XSRF
Credit
This vulnerability was reported by Alexander Klink of Cynops
GmbH.
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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