alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Junos OS - Unauthenticated Arbitrary File Upload Attempt (CVE-2023-36851)"; flow:established,to_server; flowbits:set,ET.CVE-2023-36851; http.method; content:"POST"; http.uri; content:"/webauth_operation.php"; fast_pattern; http.request_body; content:"rs=do_upload"; nocase; content:"rsargs"; nocase; content:"fileName"; nocase; content:"fileData"; nocase; content:"csize"; nocase; reference:url,supportportal.juniper.net/s/article/2023-08-Out-of-Cycle-Security-Bulletin-Junos-OS-SRX-Series-and-EX-Series-Multiple-vulnerabilities-in-J-Web-can-be-combined-to-allow-a-preAuth-Remote-Code-Execution; reference:url,labs.watchtowr.com/cve-2023-36844-and-friends-rce-in-juniper-firewalls/; reference:cve,2023-36846; reference:cve,2023-36847; classtype:attempted-admin; sid:2047867; rev:2; metadata:affected_product JunOS, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2023_09_01, cve CVE_2023_36851, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, updated_at 2024_03_12, reviewed_at 2023_09_01; target:dest_ip;)