Privilege escalation in Microsoft Visual Studio Installer



Published: 2021-04-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-27064
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Visual Studio
Universal components / Libraries / Software for developers

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU52148

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-27064

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

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly impose security restrictions in the Visual Studio Installer, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Visual Studio: 15.9 - 16.4.0 16.4.29519.181

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27064


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.



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