Privilege escalation in Microsoft Group Policy



Published: 2020-09-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1013
CWE-ID CWE-300
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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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) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU46480

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1013

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists when Microsoft Windows processes group policy updates. A remote attacker on the local network can launch a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine and gain elevated privileges on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 2004

Windows Server: 2008 - 2019 2004

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1013


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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