Vulnerability identifier: #VU11030

Vulnerability risk: Low

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

CVE-ID: CVE-2018-0875

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ASP.NET Core MVC
Universal components / Libraries / Software for developers

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the way that .NET Core handles specially crafted requests. A remote attacker can send a small number of specially crafted requests to an .NET Core web application, trigger a hash collision and cause performance to degrade significantly enough to cause service crash.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ASP.NET Core MVC: 1.0.0 - 2.0

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0875

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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?

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