#VU79145 Input validation error in Microsoft products - CVE-2023-38180

Vulnerability identifier: #VU79145

Vulnerability risk: High

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2023-38180

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send  specially crafted input to the application and perform a denial of service (DoS) attack.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

.NET: 6.0.0 - 6.0.20, 7.0.0 - 7.0.9

Visual Studio: 17.2.0 17.2.32505.173 - 17.2.17 17.2.33829.164, 17.4.0 17.4.33103.184 - 17.4.9 17.4.33829.165, 17.6.0 17.6.33712.159 - 17.6.5 17.6.33829.357

ASP.NET Core: before 2.1.40, 2.1.40

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-38180

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.