diff options
| -rw-r--r-- | source3/smbd/process.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source3/smbd/process.c b/source3/smbd/process.c index 1ba1db5c5d..53c5e0b408 100644 --- a/source3/smbd/process.c +++ b/source3/smbd/process.c @@ -1633,8 +1633,12 @@ static void process_smb(struct smbd_server_connection *conn, if (smbd_is_smb2_header(inbuf, nread)) { smbd_smb2_first_negprot(smbd_server_conn, inbuf, nread); return; + } else if (nread >= smb_size && valid_smb_header(inbuf) + && CVAL(inbuf, smb_com) != 0x72) { + /* This is a non-negprot SMB1 packet. + Disable SMB2 from now on. */ + smbd_server_conn->allow_smb2 = false; } - smbd_server_conn->allow_smb2 = false; } show_msg((char *)inbuf); |