Denial of service in Microsoft .NET Framework and ASP .NET Core

1) Improper input validation

EUVDB-ID: #VU12472

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0765

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to an error when processing XML documents. A remote attacker can supply a specially crafted XML document and trigger denial of service (DoS) conditions.

Successful exploitation of the vulnerability may allow an attacker to perform a denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0 - 4.7.2

ASP.NET Core MVC: 2.0

CPE2.3

• cpe:2.3:a:microsoft:microsoft_net_framework:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_net_framework:3.0:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_net_framework:3.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_net_framework:4.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_net_framework:4.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_net_framework:4.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:aspnet_core_mvc:2.0:*:*:*:*:*:*:*

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0765

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.