alert http any any -> $HOME_NET any (
msg:"ET EXPLOIT TP-LINK TL-WR340G Router DNS Change GET Request";
flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:"/userRpm/WanDynamicIpCfgRpm.htm?"; depth:32;
content:"&dnsserver=";
content:"&Save=Save"; fast_pattern;
reference:url,www.exploit-db.com/exploits/34583;
classtype:attempted-admin;
sid:2020856; rev:5;
metadata:created_at 2015_04_08, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_13;
)