This fixes connections against the Azure SMB3 server.
It's not possible to demonstrate the bug with a test and a knownfail
entry, because it fails to even startup the test environments,
but the following change to our server demonstrates the problem
and shows the fix works:
diff --git a/source3/smbd/smb2_negprot.c b/source3/smbd/smb2_negprot.c
index da567951c0bf..25fdaea2df7b 100644
--- a/source3/smbd/smb2_negprot.c
+++ b/source3/smbd/smb2_negprot.c
@@ -711,6 +711,8 @@ NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
}
}
+ security_buffer = data_blob_null;
+
if (out_negotiate_context_blob.length != 0) {
static const uint8_t zeros[8];
size_t pad = 0;
@@ -759,6 +761,8 @@ NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
+ security_offset = 0;
+
SSVAL(outbody.data, 0x00, 0x40 + 1); /* struct size */
SSVAL(outbody.data, 0x02,
security_mode); /* security mode */
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15050
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon May 2 20:13:10 UTC 2022 on sn-devel-184