static void DetectNoFlow(ThreadVars *tv,
                         DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx,
                         Packet *p)
{
    /* No need to perform any detection on this packet, if the the given flag is set.*/
    if ((p->flags & PKT_NOPACKET_INSPECTION) ||
        (PACKET_TEST_ACTION(p, ACTION_DROP)))
    {
        return;
    }

    /* see if the packet matches one or more of the sigs */
    DetectRun(tv, de_ctx, det_ctx, p);
    return;
}

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.