Singature validation bypass in Microsoft Windows

Published: 2019-08-14 | Updated: 2019-08-14
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1163
CWE ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software Windows Subscribe
Windows Server
Vendor Microsoft

Security Advisory

This security advisory describes one low risk vulnerability.

1) Input validation error

Severity: Low

CVSSv3: 6.1 [CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1163

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote attacker to bypass signature validation mechanisms.

The vulnerability exists due to incorrect validation of signature for CAB files. A remote attacker can create a specially crafted CAB file with malicious code in it, bypass signature validation mechanisms and compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903

Windows Server: 1803, 1903, 2016, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1163

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.