alert tcp $EXTERNAL_NET any -> $HOME_NET 3306 (msg:"ET DOS Possible MySQL ALTER DATABASE Denial Of Service Attempt"; flow:established,to_server; content:"ALTER "; nocase; content:"DATABASE"; nocase; within:12; content:"|22|."; distance:0; content:"UPGRADE "; nocase; distance:0; content:"DATA"; nocase; within:8; pcre:"/ALTER.+DATABASE.+\x22\x2E(\x22|\x2E\x22|\x2E\x2E\x2F\x22).+UPGRADE.+DATA/si"; reference:url,securitytracker.com/alerts/2010/Jun/1024160.html; reference:url,dev.mysql.com/doc/refman/5.1/en/alter-database.html; reference:cve,2010-2008; classtype:attempted-dos; sid:2011761; rev:2; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)