This update resolves vulnerabilities in Microsoft SQL Server that could allow remote code execution if an authenticated attacker runs a specially crafted query that is designed to execute a virtual function from a wrong address. This leads to a function call to uninitialized memory. To learn more about the vulnerabilities, see Microsoft Security Bulletin MS15-058.
This problem was first fixed in the following cumulative update for SQL Server:
Cumulative Update 7 for SQL Server 2012 Service Pack 3(SP3)
About cumulative updates for SQL Server
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Latest cumulative update for SQL Server 2012 SP3
Method 1: Microsoft Update
This update is available through Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.
Method 2: Microsoft Download Center
You can obtain the stand-alone update package through the Microsoft Download Center. To install the update, follow the installation instructions on the download page.