ET ATTACK_RESPONSE Possible CVE-2016-1287 Inbound Reverse CLI Shellcode

Query · suricata

flow:to_server;
content:"|ff ff ff|tcp/CONNECT/3/";
pcre:"/^(?:\d{1,3}\.){3}\d{1,3}\/\d+\x00$/Ri";
Raw source ET ATTACK_RESPONSE Possible CVE-2016-1287 Inbound Reverse CLI Shellcode · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp $EXTERNAL_NET any -> $HOME_NET 500 (
    msg:"ET ATTACK_RESPONSE Possible CVE-2016-1287 Inbound Reverse CLI Shellcode";
    flow:to_server;
    content:"|ff ff ff|tcp/CONNECT/3/";
    pcre:"/^(?:\d{1,3}\.){3}\d{1,3}\/\d+\x00$/Ri";
    reference:url,raw.githubusercontent.com/exodusintel/disclosures/master/CVE_2016_1287_PoC;
    classtype:attempted-admin;
    sid:2022819; rev:1;
    metadata:created_at 2016_05_18, cve CVE_2016_1287, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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