#VU83142 Security features bypass in Microsoft products - CVE-2023-36558

Vulnerability identifier: #VU83142

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-36558

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Visual Studio
Universal components / Libraries / Software for developers
ASP.NET Core
Universal components / Libraries / Software for developers
.NET
Other software / Other software solutions

Vendor: Microsoft

Description

The vulnerability allows a local attacker to compromise the target system.

The vulnerability exists due to security features bypass in ASP.NET Core. A local attacker can bypass validations on Blazor Server forms and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Visual Studio: 2022 version 17.2, 2022 version 17.4, 2022 version 17.6, 2022 version 17.7

ASP.NET Core: 6.0, 7.0, 8.0

.NET: 6.0.0, 7.0.0, 8.0.0

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36558

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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.