640e6f3b3b
It fixes many buffer overflow in different protocol parsers, but none of them are critical, even in absense of Capsicum. Security: CVE-2016-7922, CVE-2016-7923, CVE-2016-7924, CVE-2016-7925 Security: CVE-2016-7926, CVE-2016-7927, CVE-2016-7928, CVE-2016-7929 Security: CVE-2016-7930, CVE-2016-7931, CVE-2016-7932, CVE-2016-7933 Security: CVE-2016-7934, CVE-2016-7935, CVE-2016-7936, CVE-2016-7937 Security: CVE-2016-7938, CVE-2016-7939, CVE-2016-7940, CVE-2016-7973 Security: CVE-2016-7974, CVE-2016-7975, CVE-2016-7983, CVE-2016-7984 Security: CVE-2016-7985, CVE-2016-7986, CVE-2016-7992, CVE-2016-7993 Security: CVE-2016-8574, CVE-2016-8575, CVE-2017-5202, CVE-2017-5203 Security: CVE-2017-5204, CVE-2017-5205, CVE-2017-5341, CVE-2017-5342 Security: CVE-2017-5482, CVE-2017-5483, CVE-2017-5484, CVE-2017-5485 Security: CVE-2017-5486
114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/* Copyright (c) 2015, bugyo
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* \summary: Generic Protocol Extension for VXLAN (VXLAN GPE) printer */
|
|
|
|
/* specification: draft-ietf-nvo3-vxlan-gpe-01 */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <netdissect-stdinc.h>
|
|
|
|
#include "netdissect.h"
|
|
#include "extract.h"
|
|
|
|
static const char tstr[] = " [|VXLAN-GPE]";
|
|
static const struct tok vxlan_gpe_flags [] = {
|
|
{ 0x08, "I" },
|
|
{ 0x04, "P" },
|
|
{ 0x01, "O" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define VXLAN_GPE_HDR_LEN 8
|
|
|
|
/*
|
|
* VXLAN GPE header, draft-ietf-nvo3-vxlan-gpe-01
|
|
* Generic Protocol Extension for VXLAN
|
|
*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |R|R|Ver|I|P|R|O| Reserved |Next Protocol |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | VXLAN Network Identifier (VNI) | Reserved |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
|
|
void
|
|
vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len)
|
|
{
|
|
uint8_t flags;
|
|
uint8_t next_protocol;
|
|
uint32_t vni;
|
|
|
|
if (len < VXLAN_GPE_HDR_LEN)
|
|
goto trunc;
|
|
|
|
ND_TCHECK2(*bp, VXLAN_GPE_HDR_LEN);
|
|
|
|
flags = *bp;
|
|
bp += 3;
|
|
|
|
next_protocol = *bp;
|
|
bp += 1;
|
|
|
|
vni = EXTRACT_24BITS(bp);
|
|
bp += 4;
|
|
|
|
ND_PRINT((ndo, "VXLAN-GPE, "));
|
|
ND_PRINT((ndo, "flags [%s], ",
|
|
bittok2str_nosep(vxlan_gpe_flags, "none", flags)));
|
|
ND_PRINT((ndo, "vni %u", vni));
|
|
ND_PRINT((ndo, ndo->ndo_vflag ? "\n " : ": "));
|
|
|
|
switch (next_protocol) {
|
|
case 0x1:
|
|
ip_print(ndo, bp, len - 8);
|
|
break;
|
|
case 0x2:
|
|
ip6_print(ndo, bp, len - 8);
|
|
break;
|
|
case 0x3:
|
|
ether_print(ndo, bp, len - 8, ndo->ndo_snapend - bp, NULL, NULL);
|
|
break;
|
|
case 0x4:
|
|
nsh_print(ndo, bp, len - 8);
|
|
break;
|
|
case 0x5:
|
|
mpls_print(ndo, bp, len - 8);
|
|
break;
|
|
default:
|
|
ND_PRINT((ndo, "ERROR: unknown-next-protocol"));
|
|
return;
|
|
}
|
|
|
|
return;
|
|
|
|
trunc:
|
|
ND_PRINT((ndo, "%s", tstr));
|
|
}
|
|
|