diff options
| author | Don Slice <dslice@nvidia.com> | 2021-05-03 13:57:29 +0200 |
|---|---|---|
| committer | Don Slice <dslice@nvidia.com> | 2021-05-03 20:26:27 +0200 |
| commit | 9f92e2352be4fd85a59f9ee541718ae76c719968 (patch) | |
| tree | a71754b349b66b2681716eacf133420ad478729a /eigrpd | |
| parent | Merge pull request #8545 from opensourcerouting/assert-our-own (diff) | |
| download | frr-9f92e2352be4fd85a59f9ee541718ae76c719968.tar.xz frr-9f92e2352be4fd85a59f9ee541718ae76c719968.zip | |
eigrpd: Test for EIGRP AS number and ensure it's the same
When receiving a packet, ensure that the AS number is the same.
Fixes: 8515
Signed-off-by: Don Slice <dslice@nvidia.com>
Diffstat (limited to 'eigrpd')
| -rw-r--r-- | eigrpd/eigrp_packet.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/eigrpd/eigrp_packet.c b/eigrpd/eigrp_packet.c index 0b3773399..39e384c12 100644 --- a/eigrpd/eigrp_packet.c +++ b/eigrpd/eigrp_packet.c @@ -572,9 +572,14 @@ int eigrp_read(struct thread *thread) && IS_DEBUG_EIGRP_TRANSMIT(0, PACKET_DETAIL)) eigrp_header_dump(eigrph); - // if (MSG_OK != eigrp_packet_examin(eigrph, stream_get_endp(ibuf) - - // stream_get_getp(ibuf))) - // return -1; + if (ntohs(eigrph->ASNumber) != eigrp->AS) { + if (IS_DEBUG_EIGRP_TRANSMIT(0, RECV)) + zlog_debug( + "ignoring packet from router %u sent to %pI4, wrong AS Number received: %u", + ntohs(eigrph->vrid), &iph->ip_dst, + ntohs(eigrph->ASNumber)); + return 0; + } /* If incoming interface is passive one, ignore it. */ if (eigrp_if_is_passive(ei)) { |