alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS D-Link DIR-605 getcfg.php Authentication Bypass Attempt (CVE-2021-40655)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:11; content:"/getcfg.php"; http.request_body; content:"SERVICES|3d|DEVICE.ACCOUNT"; fast_pattern; content:"AUTHORIZED_GROUP|3d|1|25|0a"; nocase; reference:url,attackerkb.com/topics/wTT1ZhDWlH/cve-2021-40655/vuln-details; reference:url,github.com/Ilovewomen/D-LINK-DIR-605/; reference:cve,2021-40655; classtype:attempted-admin; sid:2059893; rev:1; metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_02_05, cve CVE_2021_40655, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2025_02_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)