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Rule:
--
Sid:
1418
--
Summary:
This event is generated when an SNMP-Trap connection over TCP to an SNMP
daemon is made.
--
Impact:
Information gathering
--
Detailed Information:
The SNMP (Simple Network Management Protocol) Trap daemon usually
listens on port 161, tcp or udp.
An attacker may attempt to send this request to determine if a device is
using SNMP.
--
Affected Systems:
Devices running SNMP daemons on well known ports.
--
Attack Scenarios:
An attacker sends a packet directed to tcp port 161, if sucessful a
reply is generated and the attacker may then launch further attacks
against the SNMP daemon.
--
Ease of Attack:
Simple.
--
False Positives:
None known.
--
False Negatives:
None known.
--
Corrective Action:
Use a packet filtering firewall to protect devices using the SNMP
protocol and only allow connections from well-known hosts.
--
Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>
Snort documentation contributed by Chaos <c@aufbix.org>
--
Additional References:
CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0013
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0012
--
|
