Vulnerability identifier: #VU22579

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15862

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CKFinder
Web applications / JS libraries

Vendor: CKSource

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to insufficient validation of the file extension when processing file uploads. A remote attacker can upload files that do not have an extension, even if CKFinder is configured to allow certain file extensions only.

The vulnerability affects CKFinder for ASP, CKFinder for ASP.NET, CKFinder for ColdFusion, and CKFinder for PHP.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CKFinder: 2.6.0 - 2.6.2.1

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External links
http://ckeditor.com/blog/CKFinder-3.5.1-and-CKFinder-2.6.3-released/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.