2486.txt

This is the snapshot of Snot Latest Rules

Rule:

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Sid:
2486

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Summary:
This event is generated when an attempt is made to exploit a denial of service (DoS) associated with tcpdump decoding of an isakmp payload.

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Impact:
A successful attack may cause a DoS of the host running tcpdump.

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Detailed Information:
The tcpdump decode of an isakmp packet with an identification payload may be susceptible to a DoS attack.  This occurs because the code does not properly convert the payload length field from network-to-host byte order. This may cause tcpdump to crash when specific values are supplied to the payload length.

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Affected Systems:
Hosts running tcpdump versions 3.8.1 and earlier

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Attack Scenarios:
An attacker can create and send a malformed isakmp packet that may cause a host running tcpdump and analyzing the packet to crash.

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Ease of Attack:
Simple. Exploit code exists.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

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Contributors:
Sourcefire Vulnerability Research Team
Judy Novak <[e-mail]>

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Additional References

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