alert tls any any -> any any (msg:"ET EXPLOIT Possible EXIM RCE Inbound (CVE-2019-15846) M2"; flow:established,to_server; tls.sni; content:"|5c 00|"; fast_pattern; reference:cve,2019-15846; reference:url,exim.org/static/doc/security/CVE-2019-15846.txt; classtype:attempted-admin; sid:2027960; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_06, cve CVE_2019_15846, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_01;)