alert udp $EXTERNAL_NET any -> $HOME_NET 67 (msg:"GPL EXPLOIT bootp x86 linux overflow"; content:"A90|C0 A8 01 01|/bin/sh|00|"; reference:cve,1999-0389; reference:cve,1999-0798; reference:cve,1999-0799; classtype:attempted-admin; sid:2100319; rev:6; metadata:created_at 2010_09_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)