alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT GitLab Unauthenticated Remote ExifTool Command Injection (CVE-2021-24563)"; flow:established,to_server; http.method; content:"POST"; http.content_type; content:"multipart/form-data|3b 20|boundary="; startswith; http.request_body; content:"Content-Type: image/jpeg"; content:"AT&TFORM|00 00 03 AF|DJVMDIRM"; fast_pattern; distance:80; within:40; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:cve,CVE-2021-24563; reference:url,about.gitlab.com/releases/2021/04/14/security-release-gitlab-13-10-3-released/; reference:cve,2021-24563; classtype:trojan-activity; sid:2034961; rev:4; metadata:affected_product Web_Server_Applications, attack_target Server, created_at 2022_01_24, cve CVE_2021_24563, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)