Arbitrary file upload in cmsmadesimple CMS Made Simple



Published: 2020-08-14 | Updated: 2020-10-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-17462
CWE-ID CWE-434
Exploitation vector Network
Public exploit N/A
Vulnerable software
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CMS Made Simple
Web applications / CMS

Vendor cmsmadesimple.org

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated 14.10.2020

Added fixed version.

1) Arbitrary file upload

EUVDB-ID: #VU45826

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-17462

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

Exploit availability: No

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

CMS Made Simple: 2.0 - 2.7

External links

http://www.exploit-db.com/exploits/48742


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user 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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