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Category:   Application (Security)  >   Microsoft Windows Defender Vendors:   Microsoft
Microsoft Windows Defender File Processing Memory Corruption Error Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1040631
SecurityTracker URL:  http://securitytracker.com/id/1040631
CVE Reference:   CVE-2018-0986   (Links to External Site)
Date:  Apr 5 2018
Impact:   Execution of arbitrary code via network, Root access via local system, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Microsoft Windows Defender. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted file that, when scanned by the target Microsoft Malware Protection Engine, will trigger a memory corruption error and execute arbitrary code on the target system. The code will run with LocalSystem privileges.

Thomas Dullien of Google Project Zero reported this vulnerability.

Impact:   A remote user can create content that, when scanned by the target application, will execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (Microsoft Malware Protection Engine version 1.1.14700.5).

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0986

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0986 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2012), Windows (2016), Windows (7), Windows (8), Windows (10)
Underlying OS Comments:  7 SP1, 2008 R2 SP1, 2008 SP2, 2012, 8.1, RT 8.1, 2012 R2, 2016, 10, 10 Version 1511, 10 Version 1607, 10 Version 1703, 10 Version 1709

Message History:   This archive entry has one or more follow-up message(s) listed below.
Apr 5 2018 (Microsoft Issues Fix for Microsoft Exchange Server) Microsoft Windows Defender File Processing Memory Corruption Error Lets Remote Users Execute Arbitrary Code
Microsoft has issued a fix for Microsoft Exchange Server 2013 and 2016.
Apr 5 2018 (Microsoft Issues Fix for Microsoft Forefront Endpoint Protection) Microsoft Windows Defender File Processing Memory Corruption Error Lets Remote Users Execute Arbitrary Code
Microsoft has issued a fix for Microsoft Forefront Endpoint Protection 2010.



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