1939.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:
1939

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Summary:
This event is generated when a possible buffer overflow is attempted for the bootpd service.

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Impact:
Remote access. This attack may permit the execution of arbitrary commands on the vulnerable server.

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Detailed Information:
Bootp is a protocol used for devices such as diskless workstations to locate a host from which to boot and to receive an assigned an IP address.  A flaw exists in the bootpd service allowing a possible buffer overflow condition when a bootp request is issued with an invalid hardware address type. This attack may permit the execution of arbitrary commands on the vulnerable server. 

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Affected Systems:
OpenBSD 2.3, 2.4
FreeBSD - Releases up to and including 2.x

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Attack Scenarios:
An attacker may attempt to use this exploit to gain remote access on the vulnerable server.

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Ease of Attack:
Simple. Exploit code is freely available.

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False Positives:
None Known.

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False Negatives:
None Known.

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Corrective Action:
Block bootp traffic from entering your network.  

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Contributors:
Original rule writer unknown.
Sourcefire Research Team
Judy Novak <[e-mail]>

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Additional References:

CVE
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-1999-0798

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