CVE-2023-29513 : Security Advisory and Response

A security vulnerability has been discovered in XWiki Platform that allows users to be created even when registration is disabled. This could potentially lead to unauthorized access and user creation via a template macro.

Understanding CVE-2023-29513

This CVE affects XWiki Platform versions prior to 14.10.1, exposing a flaw in the access control mechanism that enables user creation under certain conditions.

What is CVE-2023-29513?

The CVE-2023-29513 vulnerability in XWiki Platform allows the creation of users even when registration is disabled, potentially leading to unauthorized access and user creation. This arises from improper access control mechanisms.

The Impact of CVE-2023-29513

Exploitation of this vulnerability could result in unauthorized users being created within the platform, circumventing the intended security measures. This could lead to unauthorized access to sensitive information and potential account compromise.

Technical Details of CVE-2023-29513

This section outlines the specific technical details related to the CVE, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

XWiki Platform is a generic wiki platform that offers runtime services for applications. The vulnerability arises from improper access control, allowing user creation even when registration is disabled.

Affected Systems and Versions

The vulnerability impacts XWiki Platform versions prior to 14.10.1. Users on affected versions are at risk of unauthorized user creation and potential security breaches.

Exploitation Mechanism

The vulnerability can be exploited by leveraging a template macro in xwiki-platform, enabling the creation of users regardless of the registration settings.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2023-29513, immediate steps can be taken along with long-term security practices and the importance of timely patching and updates.

Immediate Steps to Take

Users are advised to upgrade to the patched versions, namely XWiki 15.0-rc-1 and 14.10.1. It is recommended to restrict access and closely monitor user creation activities for any suspicious behavior.

Long-Term Security Practices

Implementing robust access control policies, monitoring user privileges, and conducting regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates provided by XWiki is crucial to ensure that known vulnerabilities are addressed and system security is maintained.