File: 1652.txt

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Rule:

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Sid:
1652

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Summary:
This event is generated when an attempt is made to exploit a known 
vulnerability in version 1.2 of NCSA web server.

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Impact:
File retrieval leading to compromise of confidential information, 
potential root exploit.

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Detailed Information:
This event is generated when an attempt is made to manipulate a cgi
script to retrieve files outside the web root of version 1.2 of the NCSA
web server.

The vulnerability exists in the cgi script "campas"

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Affected Systems:
	web servers running a very old (1995) version of NCSA web 
	server may have this cgi script installed.

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Attack Scenarios:
The attacker can make an HTTP GET request to the script and include
variables to retrieve a sensitive system file in the following manner:

GET /cgi-bin/campas?%0acat%0a/etc/passwd%0a

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Ease of Attack:
Simple. No exploit software required

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Ensure the system is using an up to date version of the software and has
had all vendor supplied patches applied.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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