Rule:

--
Sid:
291

--
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.

--
False Positives:
None known.

--
False Negatives:
None known.

--
Corrective Action:
Install the available security patches from your vendor.

--
Contributors:
Original Rule Writer Unknown
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>
Snort documentation contributed by Steven Alexander<alexander.s@mccd.edu>

--
Additional References:

Arachnids:
http://www.whitehats.com/info/IDS274

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2000-0341

--
