accuracy of snort?

[Pontus Joakimsson <jpontus () ess nec de>]

How accurate is the alerts in snort?

found this in the logs this morning... how seriously should i take it?
(there were only one incident from this host)

-----------------------------------------------------
[**] [1:657:2] SMTP chameleon overflow [**]
[Classification: Attempted Administrator Privilege Gain] [Priority: 10]
08/08-07:45:51.102745 209.246.10.170:64062 -> x.x.x.x:25
TCP TTL:231 TOS:0x0 ID:47600 IpLen:20 DgmLen:1420
***A**** Seq: 0x569FF343  Ack: 0x84528B3E  Win: 0x25BC  TcpLen: 20
[Xref => http://www.securityfocus.com/bid/2387]
[Xref => http://www.whitehats.com/info/IDS266]
[Xref => http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-1999-0261]
-----------------------------------------------------

Regards,
  Pontus Joakimsson

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