alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Fortinet FortiWLM Unauthenticated Command Injection (CVE-2023-34993)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/ems/cgi-bin/ezrf_upgrade_images.cgi"; fast_pattern; content:"op_type=deleteprogressfile"; content:"progressfile|3d|"; pcre:"/^[^&]*?[\x3b\x0a\x26\x60\x7c\x24]/R"; reference:url,www.horizon3.ai/attack-research/attack-blogs/fortiwlm-the-almost-story-for-the-forti-forty; reference:cve,2023-34993; classtype:web-application-attack; sid:2058405; rev:1; metadata:attack_target Server, tls_state TLSDecrypt, created_at 2024_12_19, cve CVE_2023_34993, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2024_12_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)