ET EXPLOIT ManageEngine AdSelfService Plus - Possible Code Execution via openSSLTool (CVE-2021-40539)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET EXPLOIT ManageEngine AdSelfService Plus - Possible Code Execution via openSSLTool (CVE-2021-40539)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/RestAPI/Connection";
    http.request_body;
    content:"methodToCall=openSSLTool"; nocase;
    content:"+-providerclass"; fast_pattern;
    content:"+-providerpath";
    reference:url,www.synacktiv.com/publications/how-to-exploit-cve-2021-40539-on-manageengine-adselfservice-plus.html;
    reference:cve,2021-40539;
    classtype:attempted-admin;
    sid:2034365; rev:1;
    metadata:attack_target Server, created_at 2021_11_09, cve CVE_2021_40539, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_11_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)