alert http any any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER Possible CVE-2014-6271 Attempt in Headers"; flow:established,to_server; http.header; content:"|28 29 20 7b|"; fast_pattern; content:"bash|20 2d|c"; reference:url,blogs.akamai.com/2014/09/environment-bashing.html; classtype:attempted-admin; sid:2019232; rev:7; metadata:created_at 2014_09_25, cve CVE_2014_6271, confidence Medium, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_03, reviewed_at 2024_03_06;)