Rule: -- Sid: 2225 -- Summary: This event is generated when an attempt is made to access gozila.cgi on an internal web server. This may indicate an attempt to exploit a denial of service vulnerability in the Linksys Etherfast BEFSR41 Cable/DSL Router web interface. -- Impact: Denial of service. -- Detailed Information: The Linksys Etherfast BEFSR41 Cable/DSL router web interface, Gozila.cgi, contains a denial of service vulnerability where, if a request is made for gozila.cgi is made without any arguments, the router crashes. -- Affected Systems: Linksys Etherfast BEFSR41 Cable/DSL routers running firmware version 1.42.7 or earlier. -- Attack Scenarios: An attacker sends http://routerhostname/gozilla.cgi? to a vulnerable router (where routerhostname is the router's host name). The router will crash. -- Ease of Attack: Simple. -- False Positives: If a legitimate remote user accesses gozila.cgi, this rule may generate an event. -- False Negatives: None known. -- Corrective Action: Upgrade your router firmware to 1.43 or higher. -- Contributors: Sourcefire Research Team Brian Caswell <bmc@sourcefire.com> Nigel Houghton <nigel.houghton@sourcefire.com> Sourcefire Technical Publications Team Jennifer Harvey <jennifer.harvey@sourcefire.com> -- Additional References: Bugtraq http://www.securityfocus.com/bid/6086 CVE http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1236 --
