Crafted TCP Packet - Advisory ID: cisco-sa-20070124-crafted-tcp

Unanswered Question
Apr 23rd, 2007
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Workaround shows ACL on an interface. Will ACL on VTY line to protect TELNET/SSH also work?


Also, how about ACL on ip HTTP command, and BGP ? Will this prevent this vulnerability?




"Although this is an issue with TCP, it is not required to complete the TCP 3-way handshake in order for the memory leak to be triggered. Therefore, TCP packets with a spoofed source address may trigger the leak."


Doesn't need TCP 3way handshake, I take it that VTY acl will prob not work then?

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