Code: l_strnstart(const char *tstr1, u_int tl1, const char *str2, u_int l2)
 {
 	if (tl1 > l2)
 		return 0;
 
	return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
}

Vulnerability Type: 
CWE ID: CWE-125
Summary: The BEEP parser in tcpdump before 4.9.2 has a buffer over-read in print-beep.c:l_strnstart().
Commit Message: CVE-2017-13010/BEEP: Do bounds checking when comparing strings.

This fixes a buffer over-read discovered by Brian 'geeknik' Carpenter.

Add a test using the capture file supplied by the reporter(s).