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 creditials to exectue 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.

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