ET WEB_SPECIFIC_APPS Linksys E5600 CI_InternetConnection ifname Parameter Command Injection Attempt (CVE-2025-45487)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Linksys E5600 CI_InternetConnection ifname Parameter Command Injection Attempt (CVE-2025-45487)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:8;
    content:"/API/obj";
    http.header_names;
    content:"|0d 0a|Cookie|0d 0a|";
    http.request_body; strip_whitespace;
    content:"|22|StaticipP|22|"; fast_pattern;
    content:"|22|ifname|22 3a 22|";
    pcre:"/^.*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24)|(?:\x26{2}|%26%26))+/R";
    reference:cve,2025-45487;
    reference:url,github.com/JZP018/vuln03/blob/main/linksys/E5600/CI_InternetConnection/CI_InternetConnection.pdf;
    classtype:attempted-admin;
    sid:2062420; rev:2;
    metadata:affected_product Linksys, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_05_19, cve CVE_2025_45487, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_07_31, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)