alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT BMP with invalid bfOffBits"; flow:established,to_client; content:"|0d 0a 0d 0a|BM"; fast_pattern; byte_test:4,>,14,0,relative; content:"|0000000000000000|"; distance:4; within:8; reference:url,www.microsoft.com/technet/security/Bulletin/ms06-005.mspx; reference:cve,2006-0006; reference:bugtraq,16633; classtype:attempted-user; sid:2002803; rev:10; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_07_26;)