alert http any any -> $HOME_NET any (msg:"ET INFO F5 BIG-IP - Command Execution via util/bash"; flow:established,to_server; flowbits:set,ET.BIGIP.Bash; http.method; content:"POST"; http.uri; content:"/mgmt/tm/util/bash"; fast_pattern; http.request_body; content:"|22|command|22|"; content:"|22|utilCmdArgs|22|"; classtype:misc-attack; sid:2049259; rev:2; metadata:affected_product F5, attack_target Networking_Equipment, created_at 2023_11_20, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, updated_at 2026_01_20; target:dest_ip;)