We advise against loading and executing code of unknown origins without putting alternative security measures in place.Īnd then points to the page for Security Changes in the. We are updating our guidance to reflect that Code Access Security and Security-Transparent Code will not be supported as a security boundary with partially trusted code, especially code of unknown origin. NET Framework should not be used as a mechanism for enforcing security boundaries based on code origination or other identity aspects. NET Framework provides a mechanism for the enforcement of varying levels of trust on different code running in the same application called Code Access Security (CAS). MSDN documentation for Code Access Security Basics states: NET Framework, starting in version 4.5 (I believe). This is due to security changes made in the.

How can a CLR assembly created with PERMISSION_SET = SAFE may be able to access external system resources, call unmanaged code, and acquire sysadmin privileges? This is the easiest solution for those who want to continue their work I know that's not a real solution but you can change security mode: EXEC sp_configure 'show advanced options', 1ĮXEC sp_configure 'clr strict security', 0 I wrote a blog-post of my experiences, and you can find it here if you want to test it out yourself: So I am not so sure that the statement in the documentation of 'clr strict security'is 100% correct.

Now when I executed the UNSAFE function all worked as expected.

Re-creating the assembly with PERMISSION_SET = UNSAFE.

That to me indicates that there are still some controls over what is executing.

When executing the 'UNSAFE', I received a HostProtectionException.

When executing the 'SAFE' function all worked.

I created T-SQL wrapper functions around my two methods.

I created the assembly as SAFE (after having built and signed it.

I created an assembly that had a 'SAFE' method as well as an 'UNSAFE'.

I came across this the other day, and it seems it is not as bad as it sounds (apart from the fact that you can no longer just create a SAFE assembly, but need to sign it etc., or use TRUSTWORTHY).

Visual studio 2017 sql server clr