alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
msg:"ET WEB_SPECIFIC_APPS Jetty WEB-INF Information Leak Attempt Inbound (CVE-2021-34429)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/WEB-INF/web.xml"; fast_pattern;
http.uri.raw;
content:"/%u002e/"; startswith;
flowbits:set,ET.2021.34429.attempt;
reference:cve,2021-34429;
classtype:attempted-admin;
sid:2033460; rev:1;
metadata:created_at 2021_07_27, cve CVE_2021_34429, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_27;
)