KB4017063 - FIX: Runaway MDX query that uses Value() function in SSAS 2014 can rapidly and completely consume all the server memory and cause the server to hang

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SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Enterprise Core - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use) SQL Server 2014 Service Pack 2 - duplicate (do not use) More...Less

Symptoms

Assume that you are using Microsoft SQL Server 2014 Analysis Services (SSAS 2014). When Value() function is not appropriately used in an MDX (Multidimensional expressions) query, the query may rapidly and completely consume all the server memory even beyond memory limitation. Therefore, this may cause the server to hang.

Resolution

This issue is fixed in the following cumulative update for SQL Server:

Cumulative Update 5 for SQL Server 2014 SP2

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 2014

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section

References

Learn about the terminologythat Microsoft uses to describe software updates.