Rule: -- Sid: 1987 -- Summary: This event is generated when an attempt is made to exploit a flaw in the X Windows Font Service. -- Impact: Arbitrary code execution. Denial of Service. -- Detailed Information: Certain versions of XFS distributed with Sun's Solaris are vulnerable to a remote buffer overflow. The Dispatch() routine within fs.auto does not provide adequate bounds-checking. -- Affected Systems: Sun Solaris 2.5.1 to 9 (Update 2) -- Attack Scenarios: An attacker must have access to tcp port 7100. The attacker can then either cause XFS to crash or run code as user "nobody". -- Ease of Attack: Difficult -- False Positives: None Known -- False Negatives: None Known -- Corrective Action: Disable XFS in the inetd configuration file (normally /etc/inetd.conf under line fs.auto). -- Contributors: Sourcefire Research Team Brian Caswell <bmc@sourcefire.com> Nigel Houghton <nigel.houghton@sourcefire.com> Snort documentation contributed by Josh Sakofsky -- Additional References: Nessus: http://cgi.nessus.org/plugins/dump.php3?id=11188 CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1317 --
