Multiple buffer overflows in the dissect_pft_fec_detailed function in the DCP-ETSI dissector in epan/dissectors/packet-dcp-etsi.c in Wireshark 1.6.x before 1.6.13 and 1.8.x before 1.8.5 allow remote attackers to cause a denial of service (application crash) via a malformed packet.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.