alert http any any -> $HOME_NET any (
msg:"ET WEB_SPECIFIC_APPS ASMAX CGI script system Parameter Command Injection Attempt (CVE-2009-5156)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/cgi-bin/script?system"; startswith; fast_pattern;
reference:cve,2009-5156;
classtype:attempted-admin;
sid:2065221; rev:1;
metadata:affected_product ASMAX, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_16, cve CVE_2009_5156, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_16, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
target:dest_ip;
)