Memory corruption in Microsoft products - CVE-2017-8558

Vulnerability identifier: #VU7192

CSH Severity: High

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-8558

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when scanning malicious files by  the Microsoft Malware Protection Engine. A remote attacker can send a specially crafted file, trick the victim into opening it and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Microsoft Security Essentials
Microsoft Endpoint Protection
Windows Defender

Install update from vendor's website.

• Exploit #1248 - Microsoft MsMpEng - mpengine x86 Emulator Heap Corruption in VFS API (March 18, 2020)

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558

• Remote code execution in Microsoft Malware Protection Engine