ET WEB_SERVER Possible CVE-2014-6271 Attempt

Query · suricata

flow:established,to_server;
content:" HTTP/1.";
pcre:"/^[^\r\n]*?HTTP\/1(?:(?!\r?\n\r?\n)[\x20-\x7e\s]){1,500}\n[\x20-\x7e]{1,100}\x3a[\x20-\x7e]{0,500}\x28\x29\x20\x7b/s";
content:"|28 29 20 7b|"; fast_pattern;
Raw source ET WEB_SERVER Possible CVE-2014-6271 Attempt · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> $HTTP_SERVERS $HTTP_PORTS (
    msg:"ET WEB_SERVER Possible CVE-2014-6271 Attempt";
    flow:established,to_server;
    content:" HTTP/1.";
    pcre:"/^[^\r\n]*?HTTP\/1(?:(?!\r?\n\r?\n)[\x20-\x7e\s]){1,500}\n[\x20-\x7e]{1,100}\x3a[\x20-\x7e]{0,500}\x28\x29\x20\x7b/s";
    content:"|28 29 20 7b|"; fast_pattern;
    reference:url,blogs.akamai.com/2014/09/environment-bashing.html;
    classtype:attempted-admin;
    sid:2022028; rev:2;
    metadata:created_at 2015_11_04, cve CVE_2014_6271, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2019_10_08;
)

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