alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2021-23758 AjaxPro.NET - Deserialization RCE Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/ajaxpro/"; nocase; content:".ashx"; nocase; http.request_body; content:"__type"; nocase; content:"ObjectDataProvider"; nocase; fast_pattern; classtype:attempted-admin; reference:cve,CVE-2021-23758; reference:url,https://www.exploit.observer/?keyword=CVE-2021-23758&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=ajaxpro&match=exact; sid:1050602; rev:1;)