Path traversal in Contao

1) Path traversal

EUVDB-ID: #VU75521

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-29200

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the file manager. A remote user can send a specially crafted HTTP request and list files outside the document root in the file manager.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Contao: 4.0 - 5.1.3

CPE2.3

• cpe:2.3:a:contao:contao:5.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:contao:contao:4.13.20:*:*:*:*:*:*:*
• cpe:2.3:a:contao:contao:5.1.2:*:*:*:*:*:*:*

External links

http://contao.org/en/security-advisories/directory-traversal-in-the-file-manager
http://github.com/contao/contao/commit/6f3e705f4ff23f4419563d09d8485793569f31df
http://github.com/contao/contao/security/advisories/GHSA-fp7q-xhhw-6rj3

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.