epan/dissectors/packet-gsm_a_dtap.c in the GSM DTAP dissector in Wireshark 1.12.x before 1.12.6 does not properly validate digit characters, which allows remote attackers to cause a denial of service (application crash) via a crafted packet, related to the de_emerg_num_list and de_bcd_num functions.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.