alert http any any -> $HOME_NET any (
msg:"ET WEB_SPECIFIC_APPS SAP NetWeaver Application Server Java Post-Auth Arbitrary File Upload (CVE-2021-38163)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/irj/servlet/prt/portal/prtroot/com.sap.visualcomposer.VCParMigrator|3f|"; fast_pattern;
content:"parName|3d|";
pcre:"/^[^\x26]*?(?:(?:\x2e|%2[Ee]){1,2}(?:\x2f|\x5c|%5[Cc]|%2[Ff]){1,}){2,}/R";
reference:url,github.com/purpleteam-ru/CVE-2021-38163;
reference:cve,2021-38163;
classtype:web-application-attack;
sid:2061735; rev:1;
metadata:affected_product SAP, attack_target Server, tls_state TLSDecrypt, created_at 2025_04_18, cve CVE_2021_38163, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2025_04_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
target:dest_ip;
)