#VU34959 Arbitrary file upload in Contao


Published: 2019-12-17 | Updated: 2020-08-08

Vulnerability identifier: #VU34959

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19745

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Contao
Web applications / CMS

Vendor: Contao

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

Contao 4.0 through 4.8.5 allows PHP local file inclusion. A back end user with access to the form generator can upload arbitrary files and execute them on the server.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Contao: 4.0 - 4.7


External links
http://contao.org/en/news.html
http://contao.org/en/security-advisories/unrestricted-file-uploads.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability