ET WEB_SPECIFIC_APPS Citrix Content Collaboration ShareFile Remote Code Execution (CVE-2023-24489)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET WEB_SPECIFIC_APPS Citrix Content Collaboration ShareFile Remote Code Execution (CVE-2023-24489)";
    flow:established,to_server;
    http.uri;
    content:"/documentum/upload.aspx?"; fast_pattern;
    content:"uploadid|3d|";
    pcre:"/^[^&]*?(?:(?:\x2e|%+(?:25)?2[eE]|%+(?:25)?32%+(?:25)?[46]5|%+(?:25)?[cC]0%+(?:25)?[aA][eE]|%+(?:25)?[eE](?:2%+(?:25)?80%+(?:25)?[aA][45]|[fF]%+(?:25)?[bB][89cC]%+(?:25)?(?:92|8[eE]|[bB]0))){1,2}(?:\x2f|\x5c|%+(?:25)?5[Cc]|%+(?:25)?2[Ff]|%+(?:25)?[cC]0%+(?:25)?[aA][fF]|%+(?:25)?[eE][fF]%+(?:25)?[bB][cC]%+(?:25)?8[fF]|%+(?:25)?[eE][fF]%+(?:25)?[bB][9cC]%+(?:25)?(?:[aA]8|[bB][cC])){1,}){2,}/R";
    reference:url,www.assetnote.io/resources/research/encrypted-doesnt-mean-authenticated-sharefile-rce-cve-2023-24489;
    reference:cve,2023-24489;
    classtype:web-application-attack;
    sid:2071340; rev:1;
    metadata:affected_product Citrix, attack_target Server, tls_state TLSDecrypt, created_at 2026_07_28, cve CVE_2023_24489, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_07_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)