The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to denial of service. aka "Microsoft Malware Protection Engine Denial of Service Vulnerability", a different vulnerability than CVE-2017-8535, CVE-2017-8536, CVE-2017-8539, and CVE-2017-8542.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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microsoft windows_defender - |
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microsoft endpoint protection - |
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microsoft exchange server 2013 |
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microsoft exchange server 2016 |
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microsoft forefront endpoint protection - |
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microsoft forefront endpoint protection 2010 |
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microsoft security essentials - |
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microsoft system center endpoint protection - |
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microsoft windows intune endpoint protection |
Redmond's out-of-band advisory landed after the bugs were fixed
Microsoft has broken out of its usual cycle to patch more Malware Protection Engine bugs notified privately by Google Project Zero. Project Zero's Mateusz Jurczyk didn't turn up just one “crazy bad” bug: while the new bugs are all named either “Microsoft Malware Protection Engine Denial of Service Vulnerability” or “Microsoft Malware Protection Engine Remote Code Execution Vulnerability”, there are eight individual bugs covered in Microsoft's announcement. They're all different angle...
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