ET WEB_SPECIFIC_APPS Monsta FTP Arbitrary File Upload Attempt (CVE-2025-34299)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/mftp/application/api/api.php";
http.request_body; strip_whitespace;
content:"|22|actionName|22 3a 22|downloadFile|22|"; fast_pattern;
content:"|22|remotePath|22 3a 22 2f|";
content:"|22|localpath|22 3a 22 2f|";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Monsta FTP Arbitrary File Upload Attempt (CVE-2025-34299) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Monsta FTP Arbitrary File Upload Attempt (CVE-2025-34299)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/mftp/application/api/api.php";
    http.request_body; strip_whitespace;
    content:"|22|actionName|22 3a 22|downloadFile|22|"; fast_pattern;
    content:"|22|remotePath|22 3a 22 2f|";
    content:"|22|localpath|22 3a 22 2f|";
    reference:url,labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/;
    reference:cve,2025-32499;
    reference:cve,2025-34299;
    classtype:attempted-admin;
    sid:2065695; rev:2;
    metadata:affected_product Monsta_FTP, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_11_07, cve CVE_2025_34299, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, 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;
)

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