The RADIUS decoder in tcpdump 3.6.2 and earlier allows remote attackers to cause a denial of service (crash) via an invalid RADIUS packet with a header length field of 0, which causes tcpdump to generate data within an infinite loop.

tcpdump, Ethereal, and other sniffer packages allow remote attackers to cause a denial of service via malformed DNS packets in which a jump offset refers to itself, which causes tcpdump to enter an infinite loop while decompressing the packet.

Multiple buffer overflows in LBNL tcpdump allow remote attackers to execute arbitrary commands.

The L2TP protocol parser in tcpdump 3.8.1 and earlier allows remote attackers to cause a denial of service (infinite loop and memory consumption) via a packet with invalid data to UDP port 1701, which causes l2tpavpprint to use a bad length value when calling printoctets.

The bgpupdateprint function in tcpdump 3.x does not properly handle a -1 return value from the decodeprefix4 function, which allows remote attackers to cause a denial of service (infinite loop) via a crafted BGP packet.

ipprint procedure in Tcpdump 3.4a allows remote attackers to cause a denial of service via a packet with a zero length header, which causes an infinite loop and core dump when tcpdump prints the packet.