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-rw-r--r--src/plugins/map/ip4_map_t.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/plugins/map/ip4_map_t.c b/src/plugins/map/ip4_map_t.c
index c6b091294bb..a64b767c908 100644
--- a/src/plugins/map/ip4_map_t.c
+++ b/src/plugins/map/ip4_map_t.c
@@ -736,6 +736,14 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
ip4_map_t_classify (p0, d0, ip40, ip4_len0, &map_port0, &error0,
&next0);
+ /* Verify that port is not among the well-known ports */
+ if ((d0->psid_length > 0 && d0->psid_offset > 0)
+ && (clib_net_to_host_u16 (map_port0) <
+ (0x1 << (16 - d0->psid_offset))))
+ {
+ error0 = MAP_ERROR_SEC_CHECK;
+ }
+
//Add MAP-T pseudo header in front of the packet
vlib_buffer_advance (p0, -sizeof (*pheader0));
pheader0 = vlib_buffer_get_current (p0);