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-----BEGIN PGP SIGNED MESSAGE----- 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 - --------------------------BEGIN INCLUDED TEXT-------------------- 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 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBR8N25yh9+71yA2DNAQJjLQP+KoGfrRASH7QV1SjFLh1GYxyVUcNtpQdz ed3FvXa2Meht9gWH1BTRnuW8wcSntWzulH8Ks3Pf7GXMHtAODVdqsfiq7eKNK2en TkUL+2C/qBpmDKgD4kNloEKSGy9I6pZ6/5LFv65SP1IlnH3fazRpWmGFjYnMGiI9 J6DMKdgisSM= =VmiT -----END PGP SIGNATURE-----