Remote code execution when processing LNK files in Microsoft Windows



Published: 2019-08-14
Risk 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
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Input validation error

EUVDB-ID: #VU20271

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1188

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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 1903

Windows Server: 2019 - 2019 1903

External links

http://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.



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