Rule: 

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Sid: 
7021

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Summary: 
This event is generated when an attempt is made to exploit a known vulnerability in the Netfilter module on Linux systems.

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Impact: 
Serious. Denial of Service (DoS)

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Detailed Information:
The Linux kernel netfilter module is prone to a DoS condition that is manifest when it attempts to process SCTP packets that do not contain chunks.

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Affected Systems:
Linux 2.6 kernels including and prior to 2.6.17 using Netfilter modules

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Attack Scenarios: 
An attacker need only send an SCTP packet that contains no data.

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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: 
Upgrade to the latest non-affected version of the kernel.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
Kevin Shivers <kevin.shivers@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:


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