ET WEB_CLIENT Possible MacOSX HelpViewer 10.12.1 XSS Arbitrary File Execution and Arbitrary File Read (CVE-2017-2361)

Query · suricata

flow:established,from_server;
file_data;
content:"%25252f..%25252f..%25252f..%25252f..%25252f..%25252f..%25252f";
content:"javascript%253aeval"; fast_pattern;
content:"help|3a 2f 2f|";
pcre:"/document\s*\.\s*location\s*?\x3d\s*?[\x27\x22]help\x3a\/\/\/[^\x3b]+?\%25252f\.\.\%25252f\.\.\%25252f\.\.\%25252f/";
Raw source ET WEB_CLIENT Possible MacOSX HelpViewer 10.12.1 XSS Arbitrary File Execution and Arbitrary File Read (CVE-2017-2361) · 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 WEB_CLIENT Possible MacOSX HelpViewer 10.12.1 XSS Arbitrary File Execution and Arbitrary File Read (CVE-2017-2361)";
    flow:established,from_server;
    file_data;
    content:"%25252f..%25252f..%25252f..%25252f..%25252f..%25252f..%25252f";
    content:"javascript%253aeval"; fast_pattern;
    content:"help|3a 2f 2f|";
    pcre:"/document\s*\.\s*location\s*?\x3d\s*?[\x27\x22]help\x3a\/\/\/[^\x3b]+?\%25252f\.\.\%25252f\.\.\%25252f\.\.\%25252f/";
    reference:url,exploit-db.com/exploits/41443/;
    classtype:attempted-user;
    sid:2024034; rev:2;
    metadata:affected_product Mac_OSX, affected_product Safari, attack_target Client_Endpoint, created_at 2017_03_08, cve CVE_2017_2361, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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