tcpdump before 4.9.3 has a heap-based buffer over-read related to aoe_print in print-aoe.c and lookup_emem in addrtoname.c

How it was found

There seems to be a heap-based buffer overread while running tcpdump on a crafted pcap file. A similar behavior is seen when tcpdump is listening on an interface and the contents of this file is relayed over the network.

Please find the detailed report on github https://github.com/the-tcpdump-group/tcpdump/issues/645

CVE: https://nvd.nist.gov/vuln/detail/CVE-2017-16808

Impact

Heap Over Read