ET WEB_SPECIFIC_APPS Github Enterprise SAML Authentication Bypass (CVE-2024-9487)

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS Github Enterprise SAML Authentication Bypass (CVE-2024-9487)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/saml/consume"; fast_pattern;
    http.cookie;
    content:"saml_csrf_token|3d|";
    http.request_body;
    content:"SAMLResponse|3d|";
    base64_decode:offset 0, relative;
    base64_data;
    content:"|3c|saml2p|3a|Response|20|"; startswith;
    content:"|3c 2f|ds|3a|KeyInfo|3e 3c|ds|3a|Object"; distance:0;
    content:"|3c|samlp|3a|Response|20|"; distance:0;
    content:"|3c|saml2|3a|Assertion"; distance:0;
    content:"|3c|saml2|3a|EncryptedAssertion";
    reference:url,projectdiscovery.io/blog/github-enterprise-saml-authentication-bypass;
    reference:cve,2024-9487;
    classtype:web-application-attack;
    sid:2061124; rev:1;
    metadata:affected_product Github_Enterprise, attack_target Server, tls_state TLSDecrypt, created_at 2025_03_27, cve CVE_2024_9487, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit, updated_at 2025_03_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)