CVE-2022-36099 : Exploit Details and Defense Strategies

XWiki Platform Wiki UI Main Wiki Eval Injection vulnerability is a critical security issue that allows the execution of arbitrary code on affected XWiki installations. Here is detailed information about this CVE.

Understanding CVE-2022-36099

This section provides a comprehensive overview of the XWiki Platform Wiki UI Main Wiki Eval Injection vulnerability.

What is CVE-2022-36099?

XWiki Platform Wiki UI Main Wiki is susceptible to an Eval Injection vulnerability, allowing attackers to inject arbitrary wiki syntax, including Groovy, Python, and Velocity script macros, via a URL parameter. This enables the execution of code bypassing all rights checks, leading to modification and disclosure of stored content and potential impact on wiki availability.

The Impact of CVE-2022-36099

The vulnerability has a CVSS base score of 9.9, categorizing it as critical. It has a high impact on confidentiality, integrity, and availability, with low privileges required for exploitation. The attack complexity is low, with a network-based attack vector and user interaction not needed.

Technical Details of CVE-2022-36099

This section delves into the technical aspects of the XWiki Platform Wiki UI Main Wiki Eval Injection vulnerability.

Vulnerability Description

The vulnerability allows attackers to inject Groovy, Python, and Velocity code, executing it on vulnerable XWiki versions. The issue was patched in versions 13.10.6 and 14.4, with workarounds available for affected versions.

Affected Systems and Versions

The vulnerability affects XWiki versions >= 5.3-milestone-2 and < 13.10.6, along with versions >= 14.0 and < 14.4. Users of these versions are at risk of exploitation.

Exploitation Mechanism

By manipulating the

XWikiServerClassSheet

via a URL parameter, attackers exploit the vulnerability to execute malicious code, circumventing security checks and compromising the XWiki installation.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2022-36099 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

Update XWiki installations to versions 13.10.6 or 14.4, where the vulnerability has been patched. Consider manual changes if direct updates are not feasible.

Long-Term Security Practices

Implement consistent security practices, including regular security audits, code reviews, and user access controls, to prevent code injection vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from XWiki. Apply patches promptly and follow best practices for securing XWiki installations.