Privilege escalation in Windows Remote Desktop Services



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0655
CWE-ID CWE-264
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25229

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2020-0655

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists due to the way Remote Desktop Services formerly known as Terminal Services handles clipboard redirection. A remote authenticated user with access to a system running Remote Desktop Services can abuse clipboard redirection and execute arbitrary code in the context of another user's session.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909 10.0.18363.476

Windows Server: 2008 - 2019 1909

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0655


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

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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