alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT OpenTSDB RCE in HTTP Request M2 (CVE-2023-25826)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2f|q|3f|"; fast_pattern; startswith; content:"start="; distance:0; content:"&m="; content:"|3a|"; distance:0; content:"&o="; content:"&wxh="; content:"&style="; pcre:"/^(?:\x3b|\x0a|\x26|\x60|\x7C|\x24)/UR"; content:"&json"; endswith; reference:cve,2023-25826; reference:url,synopsys.com/blogs/software-security/opentsdb.html; reference:url,opentsdb.net/docs/build/html/user_guide/guis/index.html; reference:url,packetstormsecurity.com/files/174570/OpenTSDB-2.4.1-Unauthenticated-Command-Injection.html; classtype:trojan-activity; sid:2052824; rev:1; metadata:affected_product OpenTSDB, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_22, cve CVE_2023_25826, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2024_05_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)