CVE-2017-8558 Memory corruption in Microsoft Malware Protection Engine
Remote attackers can execute arbitrary code by sending a specially crafted file to the Microsoft Malware Protection Engine.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-8558?
CVE-2017-8558 is a high-severity memory corruption vulnerability in Microsoft Malware Protection Engine, published on 29 Jun 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 32-bit versions of 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 does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
Weakness: CWE-119
Which versions are affected by CVE-2017-8558?
It affects 5 products.
Products include Microsoft Endpoint Protection, Microsoft Forefront Endpoint Protection, Microsoft Security Essentials, Microsoft Windows Defender, Microsoft Windows Intune Endpoint Protection.
How do I fix CVE-2017-8558?
No fix has been published for CVE-2017-8558 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-8558 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-8558 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Microsoft Malware Protection Engine
- CVE-2017-8540 Microsoft Malware Protection Engine Improper Restriction of Operations
- CVE-2021-24092 Microsoft Defender Elevation of Privilege Vulnerability
- CVE-2017-8535 Denial of service in Malware Protection Engine
- CVE-2017-8536 Denial of service in Malware Protection Engine
- CVE-2017-8537 Denial of service in Malware Protection Engine
Sources
Also known as GHSA-ghvf-8cx5-ch3h.