SB2020081427 - Arbitrary file upload in cmsmadesimple CMS Made Simple
Published: August 14, 2020 Updated: October 14, 2020
Security Bulletin ID
SB2020081427
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Arbitrary file upload (CVE-ID: CVE-2020-17462)
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
CVSSv4: 8.6 [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]
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.