ET WEB_SPECIFIC_APPS Cleo MFT Arbitrary File Write (CVE-2024-50623)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/Synchronization";
http.header;
content:"VLSync|3a 20|ADD|3b|"; fast_pattern; nocase;
content:"path|3d|"; distance:0;
pcre:"/^[^\x0d\x0a\x3b]*[\x2f\x5c]/R";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS Cleo MFT Arbitrary File Write (CVE-2024-50623) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Cleo MFT Arbitrary File Write (CVE-2024-50623)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/Synchronization";
    http.header;
    content:"VLSync|3a 20|ADD|3b|"; fast_pattern; nocase;
    content:"path|3d|"; distance:0;
    pcre:"/^[^\x0d\x0a\x3b]*[\x2f\x5c]/R";
    reference:url,labs.watchtowr.com/cleo-cve-2024-50623/;
    reference:cve,2024-50623;
    classtype:web-application-attack;
    sid:2058190; rev:1;
    metadata:attack_target Server, tls_state TLSDecrypt, created_at 2024_12_11, cve CVE_2024_50623, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2024_12_11, reviewed_at 2025_07_07, 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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