alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2021-35587 Oam - Insecure Deserialization"; flow:established,to_server; http.uri; content:"sessionservice"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2021-35587; reference:url,https://www.exploit.observer/?keyword=CVE-2021-35587&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=oam&match=exact; sid:1010870; rev:1;)