Unrestricted upload of files in .NET Core



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-8416
CWE-ID CWE-434
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ASP.NET Core MVC
Universal components / Libraries / Software for developers

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU15881

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-8416

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to write arbitrary files to the system.

The vulnerability exists due to insufficient validation of user-supplied input when processing file uploads within .NET Core. A remote attacker can upload arbitrary file to a limited number of location on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ASP.NET Core MVC: 2.1.0

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8416


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.



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