#VU15254 Improper input validation in Windows and Windows Server


Published: 2018-10-09 | Updated: 2018-10-12

Vulnerability identifier: #VU15254

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: CVE-2018-8495

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

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

The weakness exists due to improper handling of URIs by Windows Shell. A remote attacker can trick the victim into opening a specially crafted file with Microsoft Edge and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 10 1809

Windows Server: 2016 - 2019 1803


External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8495


Q & A

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.


Latest bulletins with this vulnerability