Rule History

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Hikvision Authentication Bypass Attempt M2 (snapshot retrieval) (CVE-2017-7921)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/onvif-http/snapshot|3f|auth|3d|YWRtaW4"; fast_pattern; reference:url,seclists.org/fulldisclosure/2017/Sep/23; reference:cve,2017-7921; classtype:attempted-admin; sid:2068370; rev:1; metadata:affected_product HikVision, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_03_20, cve CVE_2017_7921, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_20, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)