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