Execute As &&<Privileged User&&> Not Working

May 13, 2008

Hi all,
I want some low privileged users to get access to some systems Stored procedure and other resources.What is wrong with the below code ?



--Login as 'domainadministrator', a privileged user




Code Snippet

Create Proc ExecCmd(@cmd nVarchar(4000)) with execute as 'domainadministrator'

AS

Begin

EXECUTE (@cmd)

End
Command(s) completed successfully.

GRANT IMPERSONATE ON USER::[domainadministrator] to appusers
Command(s) completed successfully.

Grant execute on ExecCmd to appusers
Command(s) completed successfully.







But When I login as appusers, and run the procedure I am getting this error




Code Snippet
ExecCmd 'xp_cmdshell ''DIR C'''

The EXECUTE permission was denied on the object 'xp_cmdshell', database 'mssqlsystemresource', schema 'sys'








Thanks in advance,
Sanoj

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Can't Get In To SQLServer 2005 Express With A Privileged Account

Aug 10, 2006



Bummer. I can't remember the SA password. I had setup a user account, but I can't change anything or add any new accounts using this login. I can't get in using the windows authentication method no matter how I am logged into this machine.

Any suggestions? I have never been able to use Windows Authentication. There must be something I'm missing here. I have spent hours and hours trying to get into this machine. I just want to replicate a database. This is very frustrating.



Thanks guys.

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Jan 26, 2007

Hi,
I have a least privileged SQL Login €œClient€? and have granted execute rights on XP_Cmdshell SP at master db. When I execute master.. XP_Cmdshell €˜dir€™ I€™m getting the below error.

Msg 15153, Level 16, State 1, Procedure xp_cmdshell, Line 1
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Please note it is SQL Login account and not windows account. I have checked everywhere for similar problem and no luck.

Thanks for you help in advance

With regards
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Nov 13, 2007

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public partial class _Default : System.Web.UI.Page {    protected void Page_Load(object sender, EventArgs e)  {   }    protected void Button1_Click(object sender, EventArgs e)    {      mySqlConnection = new SqlConnection(ConnectionStringConst);      mySqlConnection.Open();      try      {      // Database is named "Torsion", Table I am querying is named "Content"       SqlCommand cmd = new SqlCommand("SELECT * FROM [Torsion].[dbo].[Content] ORDER BY [Section] DESC", mySqlConnection);       rdr = cmd.ExecuteReader();       ListBox1.DataSource = rdr[0];       ListBox1.DataTextField = "HLContent"; // HLContent is the first column in my database       ListBox1.DataBind();        // I want to store HLContent into ListBox1 control      }    catch  { throw;}    finally    {   mySqlConnection.Close();        mySqlConnection.Dispose();    }    }}-----------------------------------------ERROR_MESSAGE_BELOW----------------------------
Server Error in '/' Application.


Invalid attempt to read when no data is present.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.Source Error:



An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:



[InvalidOperationException: Invalid attempt to read when no data is present.]
System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +137
System.Data.SqlClient.SqlDataReader.get_Item(Int32 i) +7
_Default.Button1_Click(Object sender, EventArgs e) +167
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102



Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832

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Mar 11, 2007

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MM_Cmd.ActiveConnection = MM_connAdmin_STRING
strSQL = "update Products_Categories set Depth=NULL, Lineage=''"
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Hi ,


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Code Snippet SQL


DECLARE @dbname nvarchar(128)
DECLARE @dboptions nvarchar(1024)

SET @dboptions = N'/**/'
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IF (NOT EXISTS (SELECT name
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Feb 1, 2008



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for example i can change the context by execute as login='login1'

but if i change context by execute as user='user1' , then perform the operation , a permission deny error would occur.
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Can anyone tell me why I'll receive a error via following steps? Thanks in advance!






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Hi all,



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Mar 1, 2007

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"

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Sep 3, 2007

Hi,

I have a problem with sp execution.:







objects of [dbo]

Tables of [nuran]

Grants of [nuran]


[dbo].tabloA

[nuran].tmptabloA

Select,insert, update on [dbo].tabloA


[dbo].tmptabloA



Deny for [dbo].tmptabloA


[dbo].sp_yordam



Grant for executing [dbo].sp_yordam









(1)
create PROCEDURE [dbo].[SP_yordam]
AS
BEGIN

BEGIN TRANSACTION @Tran1
€¦€¦€¦€¦€¦. €¦€¦€¦€¦€¦€¦ €¦€¦€¦€¦.

INSERT INTO [tabloA]
(, ,)
SELECT ,,
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€¦€¦€¦ €¦€¦€¦ €¦€¦€¦.

DELETE FROM [tmptabloA]

COMMIT TRANSACTION @Tran1


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If I write the procedure like that:

(2)
create PROCEDURE [dbo].[SP_tmpSil]
AS

declare @tablo1 as varchar(50),
DECLARE @sil as nvarchar(max)
select @tablo1='[tmptabloA]'

SELECT @sil = ' DELETE FROM ' + @tablo1 + ';'
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END

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(3)
create PROCEDURE [dbo].[SP_yordam]
AS
BEGIN

BEGIN TRANSACTION @Tran1
€¦€¦€¦€¦€¦. €¦€¦€¦€¦€¦€¦ €¦€¦€¦€¦.

INSERT INTO [tabloA]
(, ,)
SELECT ,,
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€¦€¦€¦ €¦€¦€¦ €¦€¦€¦.

DELETE FROM [nuran].[tmptabloA]

COMMIT TRANSACTION @Tran1


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hi



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There is a stored procedure to create the database user and alter role membership, I want the user to execute the sp as a different, higher privilege account so as not to give the user underlying permission to create users in the database.

USE [master]
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/****** Object: StoredProcedure [dbo].[sp_create_db_users] Script Date: 22/07/2014 13:54:46 ******/
SET ANSI_NULLS ON
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[Code] ....

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Further test results:
(3) Function can be called when making the user "webusertest" member of the "db_owner" role, which is too much rights to grant for the anonymous web user.

(4) When adding the user 'webusertest' to get 'Execute' permissions on the assembly, it does not get added. After clicking OK, there is no warning message, but when opening the Assembly Properties -> Permission dialog box the same time, the 'webusertest' user does not appear in the list.

Thankful for any advice on this matter.

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Hello All,I tried to set the access permissions for debugging stored procedure by reading the articlehttp://msdn2.microsoft.com/en-us/library/w1bhybwz(VS.80).aspxandhttp://technet.microsoft.com/en-us/library/ms164014.aspxI have tried to add the role to sysaminas follows1)SELECT * FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_NAME = 'sp_sdidebug'(to find the sp)Error:--The stored procedure not found2)sp_addsrvrolemember 'Developmentswati.jain', 'sysadmin' though this is executed successfuly . Error is still persisting 
Cannot debug stored procedures because the SQL Server database is not setup correctly or user does not have permission to execute master.sp_sdidebug.

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