ET INFO Possible GoCD Authentication Bypass URI Path - cruise_config (SET)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET INFO Possible GoCD Authentication Bypass URI Path - cruise_config (SET)";
    flow:established,to_server;
    flowbits:set,ET.gocd.auth;
    flowbits:noalert;
    http.method;
    content:"GET";
    http.uri;
    content:"/cruise_config"; nocase; fast_pattern;
    reference:url,blog.sonarsource.com/gocd-pre-auth-pipeline-takeover;
    reference:url,attackerkb.com/topics/ShpnUFlqDz/pre-auth-takeover-of-build-pipelines-in-gocd-cve-2021-43287/rapid7-analysis;
    classtype:not-suspicious;
    sid:2034332; rev:4;
    metadata:created_at 2021_11_02, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)