Privilege escalation in Microsoft Windows



Published: 2020-12-24
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-17008
CWE-ID CWE-119
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
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: #VU49142

Risk: Low

CVSSv3.1: 8.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-17008

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error within the user-mode printer driver host process splwow64.exe within the Windows kernel. A local user can run a specially crafted program to trigger untrusted pointer dereference and execute arbitrary code on the system with elevated privileges.

Note, this vulnerability exists due to incomplete patch for vulnerability #VU28018.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Windows: 8.1 - 10 Mobile

Windows Server: 2012 - 2019 2004

External links

http://bugs.chromium.org/p/project-zero/issues/detail?id=2096


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. However, proof of concept for this vulnerability is available.



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