CVE-2017-12998: tcpdump: Buffer over-read in print-isoclns.c:isis_print_extd_ip_reach() in IS-IS parser

Severity: Critical

CVSS Score: 9.8

The IS-IS parser in tcpdump before 4.9.2 has a buffer over-read in print-isoclns.c:isis_print_extd_ip_reach().