alert tcp $EXTERNAL_NET any -> $HOME_NET 135 (msg:"GPL NETBIOS DCERPC CoGetInstanceFromFile overflow attempt"; flow:established,to_server; flowbits:isset,smb.tree.bind.msqueue; content:"|05|"; byte_test:1,!&,16,3,relative; content:"|00|"; within:1; distance:1; content:"|01 00|"; within:2; distance:19; byte_test:4,>,128,20,relative; reference:cve,2003-0995; reference:url,www.eeye.com/html/Research/Advisories/AD20030910.html; reference:url,www.microsoft.com/technet/security/bulletin/MS03-026.mspx; classtype:attempted-admin; sid:2103159; rev:4; metadata:created_at 2010_09_23, cve CVE_2003_0995, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)