#VU25723 Arbitrary file upload in DotNetNuke - CVE-2020-5188
Published: March 2, 2020 / Updated: October 20, 2021
Vulnerability identifier: #VU25723
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-5188
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
DotNetNuke
DotNetNuke
Software vendor:
DNN
DNN
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insecure permissions issue. A remote authenticated attacker can bypass the client-side validation and upload files with extensions which are allowed only for superuser only.
Remediation
Install update from vendor's website.