#VU15877 Cryptographic issues in Windows and Windows Server


Published: 2018-11-14

Vulnerability identifier: #VU15877

Vulnerability risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8549

CWE-ID: CWE-310

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows an attacker to bypass certain security restrictions.

The vulnerability exists in the way Windows validates kernel driver signatures. An attacker with ability to pass a driver file with a forged signature onto the system can gain elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 8.1 RT, 10 1607 10.0.14393.10, 10 1703 10.0.15063.138, 10 1709 10.0.16299.19, 10 1803 10.0.17134.48, 10 1809 10.0.17763.1

Windows Server: 2012 - 2019 1803

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8549

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.


Latest bulletins with this vulnerability


Security restrictions bypass in Microsoft Windows