ET WEB_SPECIFIC_APPS XRMS CRM workflow-activities.php include_directory Remote File Inclusion

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET WEB_SPECIFIC_APPS XRMS CRM workflow-activities.php include_directory Remote File Inclusion";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"/activities/workflow-activities.php?"; nocase;
    content:"include_directory="; nocase;
    pcre:"/include_directory=\s*(https?|ftps?|php)\:\//i";
    reference:cve,CVE-2008-3399;
    reference:url,milw0rm.com/exploits/6131;
    reference:url,xforce.iss.net/xforce/xfdb/43992;
    classtype:web-application-attack;
    sid:2009870; rev:6;
    metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)