Privilege escalation in Microsoft Windows Lockscreen



Published: 2020-06-09
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1279
CWE-ID CWE-119
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU28883

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-1279

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when Windows Lockscreen fails to properly load spotlight images from a secure location. A local user can use a specially crafted application to trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1607 - 10 2004

Windows Server: 2016 - 2019 2004

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1279


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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