106-5.txt

This is the snapshot of Snot Latest Rules

Rule:

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Sid:
106-5

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Summary:
This event is generated when the pre-processor spp_rpc_decode detects network traffic that may constitute an attack. Specifically an rpc fragment with a zero length was detected.

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Impact:
Possible Denial of Service.

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Detailed Information:
This event is generated when the spp_rpc_decode pre-processor detects network traffic that may consititute an attack.

Some NFS daemons may suffer a denial of service (DoS) when they encounter RPC fragments with the length field set to zero.

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Affected Systems:
NFS Servers

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Attack Scenarios:
An attacker would need to supply RPC fragmented data to the server and set the fragment length to zero to cause the DoS to occur.

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Ease of Attack:
Simple.

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False Positives:
None Known.

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False Negatives:
None Known.

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Corrective Action:
Check the target host for signs of compromise.

Apply any appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
Nigel Houghton <[e-mail]>

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Additional References:


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