Rule:

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Sid:
1368

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Summary:
Attempted ps command access via web

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Impact:
Attempt to gain information on system files and filestructure

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Detailed Information:
This is an attempt to gain intelligence on the filesystem on a webserver. The ls command lists the files and filesystem layout on a UNIX or Linux based system. The attacker could possibly gain information needed for other attacks on the host.

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Attack Scenarios:
The attacker can make a standard HTTP request that contains '/bin/ls'in the URI.

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Ease of Attack:
Simple HTTP request.

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False Positives:
None Known

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False Negatives:
None Known

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Corrective Action:

Webservers should not be allowed to view or execute files and binaries outside of it's designated web root or cgi-bin. This command may also be requested on a command line should the attacker gain access to the machine. 

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Contributors:
Sourcefire Research Team

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Additional References:
sid: 1369

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