ET WEB_SPECIFIC_APPS Monsta FTP Server Side Request Forgery Attempt (CVE-2022-31827)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Monsta FTP Server Side Request Forgery Attempt (CVE-2022-31827)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/application/api/api.php";
    http.request_body;
    content:"|22|actionName|22 3a 22|fetchRemoteFile|22|"; fast_pattern;
    content:"|22|source|22 3a 22|http|3a 2f 2f|";
    reference:url,labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/;
    reference:cve,2022-31827;
    classtype:web-application-attack;
    sid:2065694; rev:1;
    metadata:affected_product Monsta_FTP, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_11_07, cve CVE_2022_31827, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)