ET WEB_SPECIFIC_APPS Ivanti Connect Secure XXE Attempt (CVE-2024-22024)

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;
)