alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Ivanti Connect Secure XXE Attempt (CVE-2024-22024)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/dana-na/auth/saml-sso.cgi"; fast_pattern; http.request_body; content:"SAMLRequest="; startswith; base64_decode:bytes 64, offset 0, relative; base64_data; content:"|3c 3f|xml version|3d 22|1.0|22 20 3f 3e 3c|!DOCTYPE|20|root|20 5b 3c|!ENTITY"; reference:cve,2024-22024; reference:url,labs.watchtowr.com/are-we-now-part-of-ivanti/; classtype:web-application-attack; sid:2050784; rev:1; metadata:affected_product Ivanti, attack_target Networking_Equipment, created_at 2024_02_09, cve CVE_2024_22024, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_09; target:dest_ip;)