Arbitrary file upload in CMS Made Simple - CVE-2020-10682
Published: March 20, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34712
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-10682
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The Filemanager in CMS Made Simple 2.2.13 allows remote code execution via a .php.jpegd JPEG file, as demonstrated by m1_files[] to admin/moduleinterface.php. The file should be sent as application/octet-stream and contain PHP code (it need not be a valid JPEG file).
Affected software
CMS Made Simple
How to mitigate CVE-2020-10682
Install update from vendor's website.