The iseries_check_file_type function in wiretap/iseries.c in the iSeries file parser in Wireshark 2.0.x before 2.0.2 does not consider that a line may lack the "OBJECT PROTOCOL" substring, which allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted file.
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.