1792.txt

This is the snapshot of Snot Latest Rules

Rule:  

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Sid:
1792

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

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Impact:
Serious. Execution of arbitrary code is possible.

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Detailed Information:
A buffer overflow condition exists in Mnews, an NNTP and mail client.  The overflow can be caused by a server sending enough data with a 200 response to overwrite stack memory and so present the attacker with the oppotunity to execute code of their choosing.

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Affected Systems:
FreeBSD 4.1
FreeBSD 4.2
FreeBSD 4.3
FreeBSD 4.4
FreeBSD 4.5

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Attack Scenarios:
The attacker needs to send enough extra data with the 200 response from a server to cause the overflow.

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Ease of Attack:
Moderate.

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False Positives:
A message Id of 200 will also set off this rule if the message header is longer than 64 bytes.  This rule is disabled by default

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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
Brian Caswell <[e-mail]>
Nigel Houghton <[e-mail]>

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Additional References:

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