decode/tcp: accept TCP fast open cookie request

5 years ago · df74f34a62
parent 3ca7dcd8d8
commit df74f34a62
1 changed files with 3 additions and 2 deletions
--- a/src/decode-tcp.c
+++ b/src/decode-tcp.c
@ -154,9 +154,10 @@ static void DecodeTCPOptions(Packet *p, const uint8_t *pkt, uint16_t pktlen)
                    break;
                case TCP_OPT_TFO:
                    SCLogDebug("TFO option, len %u", olen);
-                    if (olen < TCP_OPT_TFO_MIN_LEN ||
+                    if ((olen != 2) &&
+                           (olen < TCP_OPT_TFO_MIN_LEN ||
                            olen > TCP_OPT_TFO_MAX_LEN ||
-                            !((olen - 2) % 8 == 0))
+                            !((olen - 2) % 8 == 0)))
                    {
                        ENGINE_SET_EVENT(p,TCP_OPT_INVALID_LEN);
                    } else {