Rule History

alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Possible Apache Text4shell RCE Attempt URL Prefix (CVE-2022-42889) (Inbound)"; flow:established,to_server; http.uri; content:"|3d 24 7b|url|3a|UTF|2d|8|3a|http|3a 2f|"; fast_pattern; content:"|7d|"; distance:0; reference:cve,2022-42889; reference:url,sysdig.com/blog/cve-2022-42889-text4shell; classtype:attempted-admin; sid:2039468; rev:2; metadata:affected_product Apache_HTTP_server, attack_target Web_Server, created_at 2022_10_19, cve CVE_2022_42889, deployment Perimeter, deployment SSLDecrypt, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_24;)