alert http any any -> any any (msg:"ET WEB_SPECIFIC_APPS D-Link HNAP1 GetDeviceSettings Buffer Overflow Attempt (2022-37055)"; flow:established,to_server; http.uri; content:"/hnap1/"; nocase; http.header; content:"soapaction|3a 20|"; nocase; content:"http|3a 2f 2f|purenetworks|2e|com|2f|hnap1|2f|getdevicesettings"; within:60; fast_pattern; nocase; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:cve,2022-37055; classtype:web-application-attack; sid:2066178; rev:1; metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_12_08, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)