alert http [$HOME_NET,$HTTP_SERVERS] any -> any any (msg:"ET EXPLOIT GoCD Authentication Bypass Successful Leak"; flow:established,from_server; http.stat_code; content:"200"; file.data; content:"agentAutoRegisterKey="; nocase; fast_pattern; content:"webhookSecret="; nocase; content:" tokenGenerationKey="; nocase; flowbits:isset,ET.gocd.auth; 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:attempted-admin; sid:2034333; rev:1; metadata:created_at 2021_11_02, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)