ET EXPLOIT Likely Struts S2-053-CVE-2017-12611 Exploit Attempt M2

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET EXPLOIT Likely Struts S2-053-CVE-2017-12611 Exploit Attempt M2";
    flow:established,to_server;
    http.uri;
    content:"=";
    content:"%"; distance:0;
    content:"{"; distance:0;
    content:"getRunTime"; nocase; distance:0; fast_pattern;
    content:"exec"; nocase;
    pcre:"/=\s*\x25\s*\{\s*(?=.+?\bgetRunTime\b).+?\bexec\b/i";
    classtype:attempted-admin;
    sid:2024815; rev:3;
    metadata:affected_product Apache_Struts2, attack_target Web_Server, created_at 2017_10_06, cve CVE_2017_12611, deployment Datacenter, confidence Medium, signature_severity Major, updated_at 2020_09_04;
)