ET EXPLOIT Possible CVE-2016-1287 Invalid Fragment Size Inbound

Query · suricata

flow:to_server;
content:"|84 00 00|";
byte_test:1,<,9,0,relative;
byte_jump:1,0,relative,post_offset -4;
content:"|00 00 00|"; within:3;
byte_test:1,<,8,0,relative;
Raw source ET EXPLOIT Possible CVE-2016-1287 Invalid Fragment Size Inbound · 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 EXPLOIT Possible CVE-2016-1287 Invalid Fragment Size Inbound";
    flow:to_server;
    content:"|84 00 00|";
    byte_test:1,<,9,0,relative;
    byte_jump:1,0,relative,post_offset -4;
    content:"|00 00 00|"; within:3;
    byte_test:1,<,8,0,relative;
    reference:url,blog.exodusintel.com/2016/02/10/firewall-hacking;
    classtype:trojan-activity;
    sid:2022506; rev:3;
    metadata:created_at 2016_02_12, cve CVE_2016_1287, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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