alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS vBulletin RCE Inbound (CVE-2019-16759 Bypass)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/widget_tabbedcontainer_tab_panel"; fast_pattern; http.request_body; content:"subWidgets|5b|"; content:"|3b|"; distance:0; reference:url,blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/; classtype:attempted-admin; sid:2030667; rev:1; metadata:attack_target Web_Server, created_at 2020_08_10, cve CVE_2019_16759, deployment Perimeter, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_10;)