72 OpenSSL SSL/TLS handshake denial of service HTTP 2004/03/22 Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch 2004/11/13 1.5 Corrected the plugin structure and added the accuracy values in 1.5 tcp 443 open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists *OpenSSL 0.9.[6-7]* 80 Check is copied from the Nessus plugin. It is the first SSL plugin and I am not sure if the SSL connection is handled correctly. http://www.openssl.org/news/secadv_20040317.txt OpenSSL 0.9.6c to 0.9.7c; every producs that uses the afftected OpenSSL version is also affected (e.g. Cisco products). OpenSSL newer than 0.9.7c Denial Of Service There are several bugs in this version of OpenSSL which may allowan attacker to cause a denial of service against the remote host. Upgrade to version 0.9.6m (0.9.7d) or newer. 1 hour Yes http://www.securityfocus.com/bid/9899/exploit/ Yes Yes High 8 7 8 7 Medium Nessus is able to do the same check. CAN-2004-0079 9899 11139 12110 Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427 http://www.uniras.gov.uk/vuls/2004/224012/index.htm