alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Linksys WRT100/110 RCE Attempt (CVE-2013-3568)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/ping.cgi"; depth:9; endswith; http.request_body; content:"pingstr="; depth:8; fast_pattern; content:"|3b|"; within:25; reference:cve,2013-3568; reference:url,www.exploit-db.com/exploits/28484; classtype:attempted-user; sid:2027097; rev:5; metadata:attack_target IoT, created_at 2019_03_19, cve CVE_2013_3568, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_11_19;)