Privilege escalation in Windows kernel

Published: 2018-12-11 | Updated: 2018-12-13
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-8611
CWE ID CWE-362
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Windows Subscribe
Windows Server
Vendor Microsoft

Security Advisory

This security advisory describes one medium risk vulnerability.

UPDATED: 13.12.2018
Changed vulnerability description and CWE-ID.

1) Race condition

Severity: Medium

CVSSv3: 8.4 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-8611

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Description

The vulnerability allows a local user to execute arbitrary code with elevated privileges.

The vulnerability exists due to a race condition within the Kernel Transaction Manager driver (ntoskrnl.exe) when processing transacted file operations in kernel mode. A local user can create a specially program, and run arbitrary code on the system n kernel mode.

Note: the vulnerability is being exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7, 8.1, 10, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, RT 8.1

Windows Server: 1709, 1803, 2008, 2008 R2, 2012, 2012 R2, 2016, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8611

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?

Yes. This vulnerability is being exploited in the wild.