Rule:

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Sid:
105-4

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Summary:
This event is generated when the pre-processor spp_bo detects network traffic that may constitute an attack. Specifically an attempt to compromise a host running Snort was detected.

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Impact:
Serious. Execution of code may be possible. Denial of Service (DoS)

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

Certain versions of the Back Orifice preprocessor are vulnerable to a stack based buffer overflow condition. This event indicates that an attempt has been made to exploit the condition.

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Affected Systems:
	Snort 2.4 through 2.4.2

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Attack Scenarios:
An attacker would need to craft packets and have them processed by a Snort instance using a vulnerable Back Orifice preprocessor.

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Ease of Attack:
Difficult.

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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.

Upgrade to Snort 2.4.3 or higher.

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

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Additional References:


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