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Add a paranoia check on incoming PDUs
author
Volker Lendecke
<vl@samba.org>
Fri, 12 Sep 2008 19:19:37 +0000
(21:19 +0200)
committer
Volker Lendecke
<vl@samba.org>
Fri, 12 Sep 2008 19:42:34 +0000
(21:42 +0200)
(This used to be commit
8b81b85200b7ca18cf81fdbbc3254d8578b35f43
)
source3/libsmb/async_smb.c
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diff --git
a/source3/libsmb/async_smb.c
b/source3/libsmb/async_smb.c
index eedc7d4481db6d8713b9152fb9e5942068b7b34c..b4d93ff968562d506bb33b4553eb60125aabbe30 100644
(file)
--- a/
source3/libsmb/async_smb.c
+++ b/
source3/libsmb/async_smb.c
@@
-759,6
+759,13
@@
static void handle_incoming_pdu(struct cli_state *cli)
}
+ if ((IVAL(pdu, 4) != 0x424d53ff) /* 0xFF"SMB" */
+ && (IVAL(pdu, 4) != 0x424d45ff)) /* 0xFF"EMB" */ {
+ DEBUG(10, ("Got non-SMB PDU\n"));
+ status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+ goto invalidate_requests;
+ }
+
/*
* TODO: Handle oplock break requests
*/