GEN:SID 1:291
Message NNTP Cassandra Overflow
Summary This event is generated when an attempt is made to exploit a buffer
overflow in the Cassandra NNTP service.
Impact Denial of Service.
Detailed Information The denial of service is caused by providing an unusually long login
name.  The rule looks for a data payload of over 512 characters.
Affected Systems Cassandra NNTP server v1.10
Attack Scenarios The attack is done remotely and causes denial of service.
Ease of Attack Simple.  An exploit is readily available.
Corrective Action Install the available security patches from your vendor.
Additional References Arachnids:
http://www.whitehats.com/info/IDS274

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2000-0341
Rule References arachnids: 274
bugtraq: 1156
cve: 2000-0341