alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Atlassian Confluence Data Center and Server Authenticated RCE (CVE-2024-21683)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/admin/plugins/newcode/addlanguage.action"; fast_pattern; http.content_type; content:"multipart/form-data|3b|"; http.request_body; content:"atl_token"; content:"newLanguageName"; content:"Content-Type|3a 20|text/javascript"; reference:url,realalphaman.substack.com/p/quick-note-about-cve-2024-21683-authenticated; reference:cve,2024-21683; classtype:web-application-activity; sid:2056094; rev:1; metadata:affected_product Atlassian_Confluence, attack_target Server, tls_state plaintext, created_at 2024_09_24, cve CVE_2024_21683, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2024_09_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)