1645.txt

This is the snapshot of Snot Latest Rules

Rule:

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Sid:
1645

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Summary:
This event is generated when an attempt is made to access /testcgi on a web server. This may indicate an attempt to exploit a cross-site scripting vulnerability that affects Ceilidh.

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Impact:
Arbitrary code execution, possible session hijack.

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Detailed Information:
This event indicates that an attempt has been made to exploit a  cross-site scripting vulnerability in Ceilidh, web-based discussion  software released by Lilikoi Software, Inc. An attacker can craft a URL  that passes malicious code to testcgi.exe. If a legitimate user  activates the URL, malicious code may be executed on the client  computer.

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Affected Systems:
All web servers that Ceilidh 2.6 or 2.7 are vulnerable.
All clients that access Ceilidh 2.6 or 2.7 are vulnerable.

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Attack Scenarios:
An attacker may craft a script that obtains the user's session cookie, thereby allowing the attacker to pose as the user for the duration of the session.

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Ease of Attack:
Simple. A proof of concept exists.

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False Positives:
If a legitimate remote user accesses testcgi.exe, this rule may generate an event. 

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest version of the software.

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Contributors:
Sourcefire Vulnerability Research Team
Brian Caswell <[e-mail]>
Sourcefire Technical Publications Team

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Additional References:

Nessus
http://cgi.nessus.org/plugins/dump.php3?id=11610

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