Windows seems only to allow Administrators to do NetShareEnumAll while Samba seems to allow anyone to do that
Richard Sharpe
realrichardsharpe at gmail.com
Mon Apr 23 16:13:57 MDT 2012
On 4/23/12, Richard Sharpe <realrichardsharpe at gmail.com> wrote:
> On 4/23/12, Jeremy Allison <jra at samba.org> wrote:
>> On Mon, Apr 23, 2012 at 02:09:35PM -0700, Richard Sharpe wrote:
>>> Hi,
>>>
>>> I was looking at using Computer Manager to add and remove shares on a
>>> Samba node, and was testing the addition and deletion of shares by
>>> non-Admin users.
>>>
>>> While both share addition and share deletion fail for non-Admin users,
>>> deletion fails in a weird manner and is unlike what Windows does.
>>>
>>> What happens on the wire is that the Windows Client sends a
>>> NetShareEnumAll request. Samba honors that request, then Windows send
>>> a request to enumerate connections, which Samba denies with
>>> WERR_ACCESS_DENIED, and the user get weird behavior.
>>>
>>> Windows servers, on the other hand, deny the NetShareEnumAll.
>>>
>>> In looking at srv_srvsvc_nt.c, I see that there is no check for DISK
>>> OP privilege in neither 3.5.x nor 3.6.x, but I suspect that
>>> enumerating shares should only be allowed for those who have DISK OP
>>> privilege.
>>>
>>> Does anyone else have an opinion here?
>>
>> +1 from me to make us more Windows-like here.
>
> OK, it seems to be more complex that I thought. There is an article
> from 2005 called "How to allow users to manage file and print shares
> without granting other advanced privileges" that addresses this.
>
> A stop-gap that will make things work reasonably would be to insist
> that they must have SeDiskOperatorPrivilege ... I will look at that
> first and think more about the other stuff.
Looks like access is controlled by those DACL looking blobs in the
registry keys contained in the attachment.
--
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanServer\DefaultSecurity]
"SrvsvcConfigInfo"=hex:01,00,04,80,a0,00,00,00,ac,00,00,00,00,00,00,00,14,00,\
00,00,02,00,8c,00,06,00,00,00,00,00,18,00,17,00,0f,00,01,02,00,00,00,00,00,\
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12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
"SrvsvcTransportEnum"=hex:01,00,04,80,8c,00,00,00,98,00,00,00,00,00,00,00,14,\
00,00,00,02,00,78,00,05,00,00,00,00,00,18,00,17,00,0f,00,01,02,00,00,00,00,\
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00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
"SrvsvcConnection"=hex:01,00,04,80,7c,00,00,00,88,00,00,00,00,00,00,00,14,00,\
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00,00,23,02,00,00,01,01,00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,\
05,12,00,00,00
"SrvsvcServerDiskEnum"=hex:01,00,04,80,4c,00,00,00,58,00,00,00,00,00,00,00,14,\
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00,00,00,05,12,00,00,00
"SrvsvcFile"=hex:01,00,04,80,64,00,00,00,70,00,00,00,00,00,00,00,14,00,00,00,\
02,00,50,00,03,00,00,00,00,00,18,00,11,00,0f,00,01,02,00,00,00,00,00,05,20,\
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00,23,02,00,00,01,01,00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,\
12,00,00,00
"SrvsvcSessionInfo"=hex:01,00,04,80,78,00,00,00,84,00,00,00,00,00,00,00,14,00,\
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00
"SrvsvcShareFileInfo"=hex:01,00,04,80,b4,00,00,00,c0,00,00,00,00,00,00,00,14,\
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01,01,00,00,00,00,00,05,12,00,00,00
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01,00,00,00,00,00,05,12,00,00,00
"SrvsvcShareAdminInfo"=hex:01,00,04,80,8c,00,00,00,98,00,00,00,00,00,00,00,14,\
00,00,00,02,00,78,00,05,00,00,00,00,00,18,00,13,00,0f,00,01,02,00,00,00,00,\
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00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
"SrvsvcShareChange"=hex:01,00,04,80,a4,00,00,00,b0,00,00,00,00,00,00,00,14,00,\
00,00,02,00,90,00,06,00,00,00,00,00,18,00,13,00,0f,00,01,02,00,00,00,00,00,\
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00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
"SrvsvcShareConnect"=hex:01,00,04,80,8c,00,00,00,98,00,00,00,00,00,00,00,14,00,\
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00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
"SrvsvcShareAdminConnect"=hex:01,00,04,80,78,00,00,00,84,00,00,00,00,00,00,00,\
14,00,00,00,02,00,64,00,04,00,00,00,00,00,18,00,03,00,0f,00,01,02,00,00,00,\
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00,00,00
"SrvsvcStatisticsInfo"=hex:01,00,04,80,60,00,00,00,6c,00,00,00,00,00,00,00,14,\
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00,00,00
"AnonymousDescriptorsUpgraded"=dword:00000001
"PreviousAnonymousRestriction"=dword:00000000
"SessionSecurityDescriptorRegenerated"=dword:00000001
"InteractiveDescriptorsRegenerated"=dword:00000001
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