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CVE-2023-29211 Explained : Impact and Mitigation

Learn about CVE-2023-29211, a critical Eval Injection vulnerability in XWiki with a CVSS base score of 10. Explore its impact, affected versions, and mitigation steps.

A critical Eval Injection vulnerability has been identified in the XWiki platform. Read on to understand the impact, technical details, and steps for mitigation and prevention.

Understanding CVE-2023-29211

This CVE-2023-29211 involves an Eval Injection vulnerability in the XWiki platform, allowing attackers to execute arbitrary code, leading to unauthorized access to the XWiki installation.

What is CVE-2023-29211?

CVE-2023-29211 is classified as CWE-95, denoting the improper neutralization of directives in dynamically evaluated code. The vulnerability arises from the improper escaping of the

wikiId
URL parameter, enabling malicious actors to run Groovy, Python, or Velocity code.

The Impact of CVE-2023-29211

The vulnerability poses a critical threat with a CVSS V3.1 base score of 10, indicating a high impact on confidentiality, availability, and integrity. Attack complexity is low, and user interaction is not required, making it easier for threat actors to exploit the issue.

Technical Details of CVE-2023-29211

The vulnerability allows users with

WikiManager.DeleteWiki
view rights to execute arbitrary code, compromising the security of the XWiki installation.

Vulnerability Description

The issue stems from the inadequate handling of the

wikiId
URL parameter, enabling unauthorized code execution and full access to the XWiki instance.

Affected Systems and Versions

The vulnerability affects XWiki platform versions from

>= 5.3-milestone-2
to
< 13.10.11
,
>= 14.0-rc-1
to
< 14.4.7
, and
>= 14.5
to
< 14.10
.

Exploitation Mechanism

By exploiting the vulnerability, threat actors can input malicious code via the

wikiId
URL parameter, gaining unauthorized access and control over the XWiki platform.

Mitigation and Prevention

To safeguard systems from CVE-2023-29211, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

        Update XWiki platform to versions 13.10.11, 14.4.7, or 14.10 to apply the necessary patches.
        Restrict user access rights and permissions to minimize the risk of unauthorized code execution.

Long-Term Security Practices

        Regularly monitor and update the XWiki platform to address security vulnerabilities promptly.
        Implement code review processes to catch and rectify vulnerabilities during development.

Patching and Updates

Stay informed about security advisories from XWiki and apply patches promptly to mitigate risks and enhance platform security.

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