EUVD-2024-1075

Comprehensive Technical Analysis of EUVD-2024-1075

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the XWiki Platform, identified as EUVD-2024-1075 (CVE-2024-31465, GHSA-34fj-r5gq-7395), allows any user with edit rights to execute arbitrary code on the server. This is achieved by adding an object of type XWiki.SearchSuggestSourceClass to their user profile or any other page. The severity of this vulnerability is critical, with a CVSS Base Score of 10.0, indicating a high risk to the confidentiality, integrity, and availability of the XWiki installation.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability can be exploited remotely over the network.
• AC:L (Low Complexity): The attack requires low skill or resources to exploit.
• PR:L (Low Privileges): The attacker needs low-level privileges (edit rights) to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required for the attack to succeed.
• S:C (Changed Scope): The vulnerability affects components beyond the security scope of the vulnerable component.
• C:H (High Confidentiality Impact): The vulnerability can lead to a complete breach of confidentiality.
• I:H (High Integrity Impact): The vulnerability can lead to a complete breach of integrity.
• A:H (High Availability Impact): The vulnerability can lead to a complete breach of availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Code Execution (RCE): An attacker with edit rights can inject malicious code by adding an object of type XWiki.SearchSuggestSourceClass to their user profile or any other page.
• Privilege Escalation: Once the attacker gains code execution capabilities, they can escalate their privileges to gain full control over the XWiki installation.

Exploitation Methods:

• Code Injection: The attacker can inject arbitrary code into the XWiki platform, potentially leading to data exfiltration, unauthorized access, or system compromise.
• Persistent Backdoors: The attacker can install backdoors or other malicious scripts to maintain persistent access to the system.

3. Affected Systems and Software Versions

The vulnerability affects the following versions of the XWiki Platform:

• Versions 5.0-rc-1 to 14.10.19
• Versions 15.0-rc-1 to 15.5.3
• Versions 15.6-rc-1 to 15.9-rc-1

Patched Versions:

• XWiki 14.10.20
• XWiki 15.5.4
• XWiki 15.10 RC1

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Upgrade to the patched versions (14.10.20, 15.5.4, or 15.10 RC1) as soon as possible.
• Workaround: Manually apply the patch to the document XWiki.SearchSuggestSourceSheet if upgrading is not immediately feasible.

Long-Term Strategies:

• Access Control: Implement strict access controls to limit edit rights to trusted users only.
• Monitoring: Enhance monitoring and logging to detect any suspicious activities or unauthorized code execution attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential risks.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using the XWiki Platform within the European Union. Given the critical nature of the vulnerability, it could lead to widespread data breaches, unauthorized access, and system compromises. This underscores the importance of timely patching and robust cybersecurity practices to protect sensitive information and maintain the integrity of digital infrastructure.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Remote Code Execution (RCE)
• Affected Component: XWiki.SearchSuggestSourceClass
• Exploitation: Adding an object of type XWiki.SearchSuggestSourceClass to a user profile or any other page allows for arbitrary code execution.

Patch Information:

• GitHub Commits:
  • Commit 0317a3aa78065e66c86fc725976b06bf7f9b446e
  • Commit 2740974c32dbb7cc565546d0f04e2374b32b36f7
  • Commit 6a7f19f6424036fce3d703413137adde950ae809

References:

• GitHub Security Advisory
• NVD CVE-2024-31465
• XWiki Jira Issue

Conclusion: This vulnerability highlights the importance of maintaining up-to-date software and implementing robust security measures. Organizations should prioritize patching affected systems and reviewing their access control policies to mitigate the risk of similar vulnerabilities in the future.