ET WEB_SPECIFIC_APPS Oracle PeopleSoft Integration Gateway HttpListeningConnector XXE (CVE-2013-3821)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET WEB_SPECIFIC_APPS Oracle PeopleSoft Integration Gateway HttpListeningConnector XXE (CVE-2013-3821)";
    flow:established,to_server;
    http.request_line;
    content:"POST /PSIGW/HttpListeningConnector"; fast_pattern; startswith;
    http.request_body;
    content:"|3c 21|ENTITY";
    content:"SYSTEM"; distance:0;
    reference:url,blog.lexfo.fr/oracle-peoplesoft-xxe-to-rce.html;
    reference:cve,2013-3821;
    classtype:web-application-attack;
    sid:2069973; rev:1;
    metadata:affected_product Oracle_PeopleSoft, attack_target Server, tls_state TLSDecrypt, created_at 2026_06_17, cve CVE_2013_3821, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_06_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)