EUVD-2024-1179

Comprehensive Technical Analysis of EUVD-2024-1179

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-1179 affects the XWiki Platform, a generic wiki platform, and is classified as a remote code execution (RCE) vulnerability. The issue arises because parameters of UI extensions are interpreted as Velocity code and executed with programming rights. This allows any user with edit rights on any document, including their own profile, to create UI extensions, leading to RCE.

Severity Evaluation:

• CVSS Base Score: 10.0 (Critical)
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

The high base score indicates the critical nature of the vulnerability. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and low privileges (PR:L). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), and the scope is changed (S:C), meaning the vulnerability can affect components beyond its security scope.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability over the network without requiring physical access to the system.
• Low Complexity: The attack requires minimal technical skill to execute.
• Low Privileges: The attacker only needs edit rights on any document, which can be as simple as editing their own profile.

Exploitation Methods:

• Velocity Code Execution: The attacker can inject malicious Velocity code into UI extension parameters, which will be executed with programming rights.
• Remote Code Execution: By exploiting this vulnerability, an attacker can execute arbitrary code on the server, leading to complete control over the XWiki installation.

3. Affected Systems and Software Versions

Affected Versions:

• XWiki Platform versions prior to 4.10.19, 15.5.4, and 15.10-rc-1.

Patched Versions:

• XWiki 14.10.19
• XWiki 15.5.4
• XWiki 15.9-RC1

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade: Immediately upgrade to the patched versions of XWiki Platform (14.10.19, 15.5.4, or 15.9-RC1).
• Access Control: Restrict edit rights to trusted users only.
• Monitoring: Implement monitoring and logging to detect any suspicious activities related to UI extensions.

Long-Term Strategies:

• Regular Updates: Ensure that all software, including XWiki Platform, is regularly updated to the latest versions.
• Security Audits: Conduct regular security audits and vulnerability assessments.
• User Training: Educate users on the risks associated with editing documents and the importance of following security best practices.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using XWiki Platform within the European Union. Given the critical nature of the vulnerability, it can lead to data breaches, unauthorized access, and disruption of services. This underscores the importance of timely patching and adherence to cybersecurity best practices to protect sensitive information and maintain service integrity.

6. Technical Details for Security Professionals

Vulnerability Details:

• Root Cause: The vulnerability stems from the improper handling of UI extension parameters, which are interpreted as Velocity code and executed with programming rights.
• Exploitation: An attacker can inject malicious Velocity code into these parameters, leading to RCE.
• Detection: Monitor for unusual activities related to UI extensions and Velocity code execution. Implement intrusion detection systems (IDS) to identify and alert on suspicious patterns.

References:

• GitHub Advisory: GHSA-c2gg-4gq4-jv5j
• NVD Entry: CVE-2024-31997
• GitHub Commits:
  • Commit 171e7c7d0e56deaa7b3678657ae26ef95379b1ea
  • Commit 1b2574eb966457ca4ef34e557376b8751d1be90d
  • Commit 56748e154a9011f0d6239bec0823eaaeab6ec3f7
• Jira Issue: XWIKI-21335

Conclusion: The vulnerability EUVD-2024-1179 in XWiki Platform is critical and requires immediate attention. Organizations should prioritize upgrading to the patched versions and implement robust security measures to mitigate the risk of exploitation. Regular monitoring and user education are essential to maintain a secure environment.