513.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:

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Sid:
513

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Summary:
This event is generated when a Cisco Catalyst switch responds to an external connection that it is listening on the remote management port. 

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Impact:
Denial of service.  A successful connection to the remote management port may allow an attacker access to the switch.

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Detailed Information:
TCP port 7161 is the remote management port for Cisco Catalyst switches.  A vulnerability exists that may allow a user to connect to this port on an affected switch and cause the supervisor module to reload, disabling service while in progress. 


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Affected Systems:
Cisco switches:

      The Catalyst 12xx family, running supervisor software versions up to and including 4.29.

      The Catalyst 29xx family (but not the Catalyst 2900XL), running supervisor software versions up to and including 2.1(5), 2.1(501), and 2.1(502). 

      The Catalyst 5xxx series (including the Catalyst 55xx family), running supervisor software versions up to and including 2.1(5), 2.1(501), and 2.1(502).

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Attack Scenarios:
An attacker can exploit a vulnerability associated with the remote management port of Cisco switches, causing a denial of service.

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Ease of Attack:
Unknown.

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False Positives:
This event is generated if any host on the internal network is listening on TCP port 7161 and responds to an external connection request.

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False Negatives:
None Known.

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Corrective Action:
Disable external access to the Cisco switch remote management port.

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Contributors:
Original rule written by Max Vision <[e-mail]>
Sourcefire Research Team
Judy Novak <[e-mail]>

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Additional References:

Whitehats
www.whitehats.com/info/IDS129

CVE 
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0430

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