ET WEB_SPECIFIC_APPS D-Link HNAP1 GetDeviceSettings Buffer Overflow Attempt (2022-37055)

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;
)