Arbitrary file upload in CMS Made Simple - CVE-2020-17462
Published: August 14, 2020 / Updated: October 14, 2020
Vulnerability identifier: #VU45826
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-17462
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
CMS Made Simple
CMS Made Simple
Software vendor:
cmsmadesimple.org
cmsmadesimple.org
Description
The vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file extension when uploading ptar and .phtml files. A remote authenticated user can upload and execute arbitrary file on the system.
Remediation
Install update from vendor's website.