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This fixes a regression that came in via 00db3aba6cf9ebaafdf39ee2f9c7ba5ec2281ea0.
Found by Vivek Das <vdas@redhat.com> (Red Hat QE).
In order to demonstrate simply run:
smbclient //server/share -U user%password -mNT1 -c quit \
--option="client ntlmv2 auth"=no \
--option="client use spnego"=no
against a server that uses "ntlm auth = ntlmv2-only" (our default
setting).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13360
CVE-2018-1139: Weak authentication protocol allowed.
Guenther
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
The ntlm auth parameter is expanded to more clearly describe the
role of each option, and to allow the new mode that permits MSCHAPv2
(as declared by the client over the NETLOGON protocol) while
still banning NTLMv1.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12252
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Based on a patch by Mantas Mikulėnas <mantas@utenos-kolegija.lt>:
Commit 0b500d413c5b ("Added MSV1_0_ALLOW_MSVCHAPV2 flag to ntlm_auth")
added the --allow-mschapv2 option, but didn't implement checking for it
server-side. This implements such checking.
Additionally, Samba now disables NTLMv1 authentication by default for
security reasons. To avoid having to re-enable it globally, 'ntlm auth'
becomes an enum and a new setting is added to allow only MSCHAPv2.
Signed-off-by: Mantas Mikulėnas <mantas@utenos-kolegija.lt>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
The code in SMBNTLMv2encrypt_hash() should not be requesting case
changes on the domain name.
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Aug 24 21:39:42 CEST 2012 on sn-devel-104
we shouldn't accept bad multi-byte strings, it just hides problems
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Thu Mar 24 01:47:26 CET 2011 on sn-devel-104
This commit is mostly to cope with the removal of SamOemHash (replaced
by arcfour_crypt()) and other collisions (such as changed function
arguments compared to Samba3).
We still provide creds_hash3 until Samba3 uses the credentials code in
netlogon server
Andrew Bartlett
