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fix weak boundary check on esis.

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This commit is contained in:
itojun 2001-10-04 09:26:37 +00:00
parent 459451d636
commit 9aebdc731d
1 changed files with 7 additions and 5 deletions
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12
print-isoclns.c
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@ -26,7 +26,7 @@
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.26 2001-09-17 21:58:04 fenner Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.27 2001-10-04 09:26:37 itojun Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -308,7 +308,7 @@ void isoclns_print(const u_char *p, u_int length, u_int caplen,
etheraddr_string(esrc),
etheraddr_string(edst));
if (!isis_print(p, length))
default_print_unaligned(p, caplen);
default_print_unaligned(p, caplen);
break;
case NLPID_NULLNS:
@ -347,17 +347,19 @@ static void
esis_print(const u_char *p, u_int length)
{
const u_char *ep;
u_int li = p[1];
const struct esis_hdr *eh = (const struct esis_hdr *) &p[2];
u_int li;
const struct esis_hdr *eh;
u_char off[2];
if (length == 2) {
if (length <= 2) {
if (qflag)
printf(" bad pkt!");
else
printf(" no header at all!");
return;
}
li = p[1];
eh = (const struct esis_hdr *) &p[2];
ep = p + li;
if (li > length) {
if (qflag)