Rule

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Sid
18511

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in Sourcefire Snort.

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Impact:
Denial of Service.   

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Detailed Information:
The frag3 preprocessor in Sourcefire Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet and send_overlap_packet.

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Affected Systems:
Sourcefire Snort 2.6.1.1
Sourcefire Snort 2.6.1.2
Sourcefire Snort 2.7 beta1

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Attack Scenarios:


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Ease of Attack:
Medium.

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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.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2007-1398:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2007-1398
  
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