Remote code execution when processing LNK files in Microsoft Windows

Published: 2019-08-14 | Updated: 2019-08-14
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1188
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Windows Subscribe
Windows Server
Vendor Microsoft

Security Advisory

This security advisory describes one high risk vulnerability.

1) Input validation error

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1188

CWE-ID: CWE-20 - Improper Input Validation

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when processing .LNK files. A remote attacker can trick the victim to open a drive or remote share with malicious Windows shortcut file (.LNK) with Windows Explorer and execute arbitrary code on the system with privileges of the current user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1709, 10 1803, 10 1809, 10 1903

Windows Server: 1803, 1903, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1188

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.