ET WEB_SPECIFIC_APPS MasaCMS m Tag Pre-Auth RCE via JSON API (CVE-2024-32641)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS MasaCMS m Tag Pre-Auth RCE via JSON API (CVE-2024-32641)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/index.cfm/_api/json/v1/default/?"; fast_pattern;
    pcre:"/^.*(?:%5[bB]|\x5b)m(?:%5[dD]|\x5d).*(?:%5[bB]|\x5b)\x2fm(?:%5[dD]|\x5d)/R";
    reference:url,github.com/MasaCMS/MasaCMS/security/advisories/GHSA-cj9g-v5mq-qrjm;
    reference:cve,2024-32641;
    classtype:attempted-admin;
    sid:2065999; rev:1;
    metadata:affected_product MasaCMS, attack_target Web_Server, tls_state plaintext, created_at 2025_12_03, cve CVE_2024_32641, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_03, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)