Vulnerability identifier: #VU7192
Vulnerability risk: High
CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Microsoft Security Essentials
Client/Desktop applications /
Antivirus software/Personal firewalls
Microsoft Endpoint Protection
Client/Desktop applications /
Antivirus software/Personal firewalls
Windows Defender
Client/Desktop applications /
Antivirus software/Personal firewalls
Vendor: Microsoft
Description
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Microsoft Security Essentials: All versions
Microsoft Endpoint Protection: 2010
Microsoft Endpoint Protection: All versions
Windows Defender: for Windows 8.1 - on Windows 7 for 32-bit Systems Service Pack 1
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.