CVE-2023-29200 : What You Need to Know

This article provides detailed information about CVE-2023-29200, a path traversal vulnerability in contao/core-bundle file manager.

Understanding CVE-2023-29200

This CVE involves an improper limitation of a pathname to a restricted directory ('Path Traversal').

What is CVE-2023-29200?

Contao, an open-source content management system, is affected by a path traversal vulnerability that allows logged-in users to list arbitrary system files in the file manager by manipulating the Ajax request.

The Impact of CVE-2023-29200

This vulnerability could potentially lead to unauthorized access to sensitive system files, although it does not allow the contents of these files to be read. Users of affected versions are advised to update to Contao 4.9.40, 4.13.21, or 5.1.4 to receive a patch. No known workarounds exist.

Technical Details of CVE-2023-29200

The vulnerability is rated with a CVSSv3.1 base score of 4.3 out of 10, indicating a medium severity issue with low attack complexity and network access required.

Vulnerability Description

The path traversal vulnerability in contao/core-bundle allows attackers to navigate outside of the intended directory and potentially access sensitive system files.

Affected Systems and Versions

Vendor: Contao
Product: Contao
Affected Versions:
= 2.0.0, < 4.9.40

= 4.10.0, < 4.13.21

= 5.0.0, < 5.1.4

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Ajax request in the file manager, allowing them to view system files they are not authorized to access.

Mitigation and Prevention

It is crucial for users to take immediate action to secure their systems and prevent potential unauthorized access.

Immediate Steps to Take

Update Contao installations to versions 4.9.40, 4.13.21, or 5.1.4 to apply the necessary patch.

Long-Term Security Practices

Regularly update software and follow security best practices to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to prevent exploitation of known vulnerabilities.