Allowing users to access only the data they are authorized to access.

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7
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2answers
152 views

Transparent Data Encryption

Are there any best practices when configuring TDE in SQL Server 2008? On SQLMag, the article "Transparent Data Encryption FAQs" says the CPU may have increased usage by up to 30%? Other than adding ...
7
votes
1answer
3k views

What's the difference between EXECUTE AS USER and EXECUTE AS LOGIN that makes the second one behave unexpectedly?

Recently I've been using EXECUTE AS LOGIN to check if a certain person could or couldn't use a table function in one of our databases. The tests showed that he could but he repeatedly reported ...
7
votes
1answer
897 views

Map Oracle roles to Active Directory groups?

Is there any built-in way to map Oracle database roles to Microsoft Active Directory groups?
7
votes
1answer
6k views

How do you disable anonymous login? - MySQL

According to the MySQL documentation, you can harden a MySQL server by adding passwords, or removing the anonymous accounts. If you want to prevent clients from connecting as anonymous users ...
7
votes
2answers
18k views

Linked server available to users without permissions

I have users seeing a linked server which they are not supposed to see. The linked server is defined so that only I will have access to it, but everybody can see and use it. I have created the ...
7
votes
3answers
2k views

How does “Be made using the login's current security context” pass the users password to remote server

Say you have a SQL Server with a "Linked Server" to another server - said "Linked Server" is set to use "Be made using the login's current security context" as its authentication model. How does the ...
7
votes
1answer
200 views

Dynamic Dimension Security

I have a cube in SSAS 2012 with about 30 dimensions, one of which is Company. The Company dimension contains a list of companies, of which there are several hundred in the cube. Our security model ...
7
votes
1answer
2k views

SQL Server, remove all users' access right to a table object

As a clean up job, I am trying to remove all users' (including non public users) access right to a single table object (apart from superusers) and will subsequently grant new access rights. Is there a ...
7
votes
2answers
3k views

SSRS appears to be ignoring Permissions set using Report Manager

I have setup SSRS on SQL Server 2008 in native mode. As an administrator I can login to report manager, upload reports and run them, and also use the Web Service URL to generate reports. I have also ...
7
votes
0answers
168 views

SQL Server 2012 Compatibility with New TLS 1.2 Standards [duplicate]

I'm trying to switch off TLS 1.0 on my SQL Server 2012 server in order to comply with PCI standards. Initially I had some trouble with the SQL Server service not starting. I found help for this ...
6
votes
2answers
1k views

securely exposing sql server 2008 for windows authentication

My company wants to have approximately 100 of their sales people (distributed around the country) to be able to run stored procedures from excel and return the data onto the spreadsheet. We have sql ...
6
votes
5answers
3k views

SQL server level permissions

I am aware of the Microsoft provided code to transfer logins between SQL servers, however this only does the account and the password. What if that particular account has various roles and ...
6
votes
3answers
1k views

Does the PCI standard forbid the use of Windows Authentication?

We currently use Mixed Mode for our SQL Server Authentication. I've tried to convince our DBA to allow us to use Windows Authentication so we can use Team Foundation Server, however he absolutely ...
6
votes
2answers
194 views

Most effective way to determine the minimum set of permissions for user

I have a database that an application connects to using db_owner permissions. How do I effectively determine the minimum set of requirements actually needed by this user (application) to run without ...
6
votes
2answers
204 views

SQL Server 2012 - SA account probe

On one of my servers (Win 2012 R2), SQL Server 2012 is constantly under attack with the SA account being hit like 10 times per second with different passwords. I don't have an SA account but still I ...
6
votes
3answers
4k views

Verifying password policy on existing users

I've recently come into an environment where a lot of databases logins do not have the enforce_password_policy flag enabled. An upcoming audit is necessitating the verification of these logins' ...
6
votes
3answers
3k views

Using the sysadmin role with EXECUTE AS

It is my understanding that I can use the EXECUTE AS OWNER clause as part of a procedure that I create to make the body of that procedure run as a different user. My goal is to execute a command that ...
6
votes
4answers
6k views

SQL Server script to delete accounts no longer in Active Directory

We have a SQL Server 2000 that will shortly be migrated to SQL Server 2005. It has years of Windows Authentication accounts created that no longer exist in Active Directory, which prevent the Copy ...
6
votes
2answers
304 views

How can I secure my database code?

We have a lot of proprietary database code that is simply encrypted using the "WITH ENCRYPTION" option. Unfortunately, this is a very weak method of securing database code. Is there any better way ...
6
votes
1answer
1k views

Why is PL/Python untrusted?

According to the docs: PL/Python is only available as an "untrusted" language, meaning it does not offer any way of restricting what users can do in it and is therefore named plpythonu. A trusted ...
6
votes
3answers
11k views

How to export all the security-related information from a SQL Server database

As you guys probably know, SQL Server does not provide an out-of-the-box solution to export all the security related statements that are declared for each element in the database (both at the database ...
6
votes
3answers
448 views

What are some important security-related error codes / events to monitor?

I am setting up alerts in SQL Server and am interested in what events I should be raising alerts for. In particular, I am looking for any events related to security. I am already monitoring error ...
6
votes
2answers
3k views

Linked Server Risks

I'm implementing a new feature which requires data from databases on multiple servers. I just need to union data from all these servers and sort it. The two options that come to mind are: Use linked ...
6
votes
2answers
6k views

The SELECT permission was denied on the (View) object after explicit grant select on view to user

I have a database with a View Named '1098Statement' We are doing testing for an application with user name 'appuser'. I have tried the following solutions to granting select on the view and keep ...
6
votes
1answer
431 views

Azure: Many Failed Login Attempts Logged

I run a SQL Server on an Azure Virtual Machine. I have noticed in the Event Logs of the server lots of failed SQL Login attempts using a ton of different usernames (none of which exist): Login ...
6
votes
2answers
140 views

Scripting an application role with a hashed password

I need to script an application role with a hashed password, so I can copy it from one database to another. Consider the following example code, which uses an Application Role to provide elevated ...
6
votes
2answers
1k views

MySQL Permissions Necessary To Reset Password

On my team there is a desire for some users to periodically update their MySQL password. Our MySQL server is shared between a few projects (and certain users are assigned to certain projects). If I'm ...
6
votes
1answer
947 views

Login to SQL Server 2k8 R2 SP1 via Active Directory Group

I added an Active Directory group as a Windows Authentication Login to our SQL Server 2008 R2 database. When a user who is a member of that group tries to connect to the server he is given a login ...
6
votes
1answer
2k views

Cross Database Chaining vs. Trustworthy Option

Recently, we had a stored proc request that required access across multiple databases. Of course this is not uncommon to have but in our case, earlier we used service accounts and this service account ...
6
votes
1answer
1k views

Using integrated security over VPN

We've got a client that we're going to allow to use one of our applications. Staff on site regularly connect to our network via VPN. The .Net application that connects to the SQL Server uses ...
6
votes
1answer
540 views

How can I make the audit system create new audit files if they already exist?

I am trying to make my audit files easier to read, I have audit trail configured as xml,extended. The problem is that if my server gets busy and reuses the pids - the logs are being appended to the ...
5
votes
7answers
18k views

Can't Login to SQL Server 2008 when running single user mode

I'm following the MS documentation here to migrate logins from one instance of SQL Server to another as part of the process described here. This involves putting the server into single user mode ...
5
votes
4answers
215 views

How do I tactfully bring up database shortcomings? [closed]

A little background: I recently inherited responsibility for support and development of a database application after the original developers left. Looking through the application, the database ...
5
votes
3answers
5k views

Is it ever harmful to set a database owner in SQL Server?

There are a bunch of databases on one of our SQL servers that have no owner. Generally speaking, is it harmful to give them one? For example: USE dbName; GO EXEC sp_changedbowner 'sa'; GO I know ...
5
votes
5answers
3k views

How to securely connect app and database servers?

(Updated) For a start, I have my app and database on separate servers. It's easy to connect them, except I am not sure how to secure my database server. Here's what I've already done: Ran ...
5
votes
2answers
5k views

Can we minimise the risk of using xp_cmdshell?

Using xp_cmdshell can be quite helpful and sometimes possibly the only answer to some scenarios. I've read some posts on the internet that enabling xp_cmdshell might jeopardize the security of the ...
5
votes
3answers
16k views

Users cannot view tables in non-default schema in SSMS

I'm having an issue setting the VIEW DEFINITION permission appropriately at the schema level for one of my users. I've created the schema TestSchema and added some tables. The user currently has ...
5
votes
6answers
13k views

Error Authenticating Proxy Account when Executing SSIS job

I have a SQL Server instance that runs 5 scheduled tasks each night, each of which run SSIS packages. These packages have been running for years and the associated steps run via a Proxy Account ...
5
votes
3answers
25k views

Grant create permission on a specific schema in Oracle 11g

I have two users A and B. I want to grant B the permission to create, drop, etc. all tables in A's schema. As far as I can see, I can grant B full access to all schemas not a specific one. Is this ...
5
votes
2answers
4k views

Is there any benefit to having one sql server login for multiple users?

I just entered a development project where the developers use the same SQL Server login to connect to a central database for their work. I have never come across this before, as each dev usually has ...
5
votes
2answers
5k views

Restricting database access per IP addresses

I have filtered IP addresses to an access DB server like this: Set the sqlnet.ora tcp.validnode_checking = YES tcp.invited_nodes = (localhost, 192.168.100.130, 192.168.100.186) But in my ...
5
votes
1answer
480 views

Is a Named Instance more Secure than the Default Instance?

I realize that you can change the default instance from the default port of 1433, and equally you can make named instances use static ports as opposed to dynamic ports, but in general are named ...
5
votes
2answers
22k views

SQL Job step run as different sql account

I'm curious how to set up a SQL job step to be executed as a different SQL login account. It appears I need to set up a New Proxy Account which requires an existing credential. When I create a ...
5
votes
1answer
104 views

How is SQL Server host identity ensured?

When I connect to some e-commerce website with my browser I use HTTPS that uses a certificate that (more or less) guarantees that example.com is indeed example.com. Now I connect to a SQL Server ...
5
votes
2answers
771 views

Stored Procedure as Create Table proxy?

With SQL Server it was my understanding, I thought, that you could elevate a users permissions with specific constraints. For example, you need a user to create a specific table object in a specific ...
5
votes
2answers
424 views

different login credentials based on user

I run a PHP symfony-framework web app for my company and it uses a single database login for all connections, whether the user is an admin or a client. I know that higher security systems often use ...
5
votes
1answer
255 views

How can we have IIS talk to SQL Server with TLS1.0 disabled? [duplicate]

Background We need PCI-DSS compliance, and so must disable TLS1.0. In my test environment we have SQL Server 2014 SP1 with CU 1 (as per this post) and IIS 8 all on the same box. I used the Nartac ...
5
votes
1answer
147 views

Auditing database administrator actions with SQL Server 2014 Standard

We have a requirement to audit database administrator access to customer databases - at a minimum, knowing which customer database they were accessing (and ideally why). Without upgrading to SQL ...
5
votes
2answers
4k views

RSExecRole missing

I have multiple servers and 4 of them have reporting services installed with the ReportServer & ReportServerTempDB databases. A few days ago I was setting up security for a new login and I found ...
5
votes
1answer
831 views

SQL Server Security Hierarchy

I have been working as a developer with SQL Server for years without asking the question, "what is dbo", a shame. Recently I have been studying the security model of SQL Server 2008. I have been ...