Remote code execution when processing LNK files in Microsoft Windows

Published: 2018-08-14 22:17:39
Severity High
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2018-8345
CVE-2018-8346
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]
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]
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Windows
Windows Server
Vulnerable software versions Windows 8.1
Windows 7
Windows 10
Windows RT 8.1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2008
Windows Server 2008 R2
Windows Server 2016
Vendor URL Microsoft

Security Advisory

1) Improper input validation

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to an error when processing .LNK files (windows shortcuts). A remote attacker can place a specially crafted .LNK file along with associated malicious binary and automatically execute it when the victim opens a removable drive or a remote share that contains .LNK file.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8345

2) Improper input validation

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to an error when processing .LNK files (windows shortcuts). A remote attacker can place a specially crafted .LNK file along with associated malicious binary and automatically execute it when the victim opens a removable drive or a remote share that contains .LNK file.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8346

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