Rule: -- Sid: 1369 -- Summary: Attempted ps command access via web -- Impact: Attempt to gain information on system files and filestructure -- 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. -- Attack Scenarios: The attacker can make a standard HTTP request that contains '/bin/ls'in the URI. -- Ease of Attack: Simple HTTP request. -- False Positives: None Known -- False Negatives: None Known -- 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. -- Contributors: Sourcefire Research Team -- Additional References: sid: 1368 --