Rule:

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Sid:
2393

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Summary:
This event is generated when an attempt is made to access the /_admin directory.

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Impact:
Unauthorized file upload or information gathering.  This can allow an attacker to upload unauthorized files to the web server or information disclosure.

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Detailed Information:
A vulnerability exists in the jbrowser web-based image gallery software that allows unchecked access to the _admin directory, possibly permitting an attacker to execute scripts found in this directory.  Execution of admin scripts upload.php3 and upload_ftp.php3 may allow the attacker to upload malicious files to the server or replace existing files.  Execution of the list_all.php script may allow an attacker to display files in directories, including those not in the web server root directory.

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Affected Systems:
Not reported.

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Attack Scenarios:
An attacker can craft a URL to execute the upload.php3, upload_ftp.php3, and list_all.php scripts to upload files or examine files on the vulnerable server. 

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Ease of Attack:
Simple.

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False Positives:
None Known.

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False Negatives:
None Known.

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Corrective Action:
Restrict access to the '_admin' directory to authorized users only. 

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Contributors:
Sourcefire Research Team
Judy Novak <judy.novak@sourcefire.com>

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Additional References:

bugtraq
http://www.securityfocus.com/bid/9537

nessus:
http://cgi.nessus.org/plugins/dump.php3?id=12032

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