ET EXPLOIT FortiOS SSL VPN - Information Disclosure (CVE-2018-13379)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/remote/fgt_lang?lang=/../"; depth:35;
isdataat:30,relative; fast_pattern;
Raw source ET EXPLOIT FortiOS SSL VPN - Information Disclosure (CVE-2018-13379) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT FortiOS SSL VPN - Information Disclosure (CVE-2018-13379)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/remote/fgt_lang?lang=/../"; depth:35;
    isdataat:30,relative; fast_pattern;
    reference:cve,CVE-2018-13379;
    reference:url,blog.orange.tw/2019/08/attacking-ssl-vpn-part-2-breaking-the-fortigate-ssl-vpn.html;
    classtype:attempted-admin;
    sid:2027883; rev:3;
    metadata:affected_product Fortigate, attack_target Networking_Equipment, created_at 2019_08_14, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, tag CISA_KEV, updated_at 2020_08_31, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1082, mitre_technique_name System_Information_Discovery;
)

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