Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Cleo MFT Arbitrary File Read (CVE-2024-50623)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/Synchronization"; http.header; content:"VLSync|3a 20|Retrieve|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:2058191; 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;)