Vulnerability identifier: #VU18164
Vulnerability risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-264
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 a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows handles calls to the LUAFV driver (luafv.sys). A local privileged user can set the short name of a file with a long name to an arbitrary short name and overwrite files on the system with limited privileges.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Windows: 8.1 - 8.1 RT, 7, 10 - 10 1809
Windows Server: 2008 - 2019 1803
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0796
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.