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Category:   Application (Generic)  >   Microsoft .NET Vendors:   Microsoft
Microsoft .NET Hash Collision Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1040505
SecurityTracker URL:  http://securitytracker.com/id/1040505
CVE Reference:   CVE-2018-0875   (Links to External Site)
Date:  Mar 13 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): .NET Core 1.0, .NET Core 1.1, .NET Core 2.0, PowerShell Core 6.0.0
Description:   A vulnerability was reported in Microsoft .NET. A remote user can cause denial of service conditions on the target system.

A remote user can send a small number of specially crafted requests to trigger a hash collision error and cause performance degradation on the target application

Ben Adams of Illyriad Games reported this vulnerability.

Impact:   A remote user can cause performance degradation on the target application.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0875
https://github.com/dotnet/announcements/issues/62

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0875 (Links to External Site)
Cause:   State error
Underlying OS:  Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 19 2018 (Red Hat Issues Fix) Microsoft .NET Hash Collision Bug Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 7.



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