alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Cisco IP Phones Web Server Vulnerability (CVE-2020-3161)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/deviceconfig/setActivationCode?params="; nocase; fast_pattern; isdataat:150,relative; reference:url,github.com/tenable/poc/blob/master/cisco/ip_phone/cve_2020_3161.txt; reference:cve,2020-3161; classtype:attempted-admin; sid:2034277; rev:1; metadata:attack_target Server, created_at 2021_10_28, cve CVE_2020_3161, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_10_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)