wireshark: DoS (crash) in the ASN.1 BER dissector (wnpa-sec-2013-25, upstream #8599)

The dissectberchoice function in epan/dissectors/packet-ber.c in the ASN.1 BER dissector in Wireshark 1.6.x before 1.6.15 and 1.8.x before 1.8.7 does not properly initialize a certain variable, which allows remote attackers to cause a denial of service application crash via a malformed packet...