CVE-2023-26477 : Vulnerability Insights and Analysis

This CVE-2023-26477 pertains to an "Eval Injection" vulnerability in the XWiki Platform's Flamingo Theme UI, allowing the injection of arbitrary wiki syntax via specific request parameters.

Understanding CVE-2023-26477

This vulnerability in the XWiki Platform exposes systems to potential manipulation through the injection of malicious scripts, impacting the confidentiality, integrity, and availability of the affected systems.

What is CVE-2023-26477?

The CVE-2023-26477 vulnerability, also known as an "Eval Injection" flaw, allows threat actors to inject arbitrary wiki syntax, including Groovy, Python, and Velocity script macros, via the

newThemeName

request parameter in the XWiki Platform. This vulnerability affects versions 6.2.4 to 13.10.10, 14.0 to 14.4.6, and 14.5 to 14.9-rc-1.

The Impact of CVE-2023-26477

The impact of CVE-2023-26477 is considered critical, with a CVSS base score of 10. Due to this vulnerability, threat actors can execute arbitrary scripts, leading to high confidentiality, integrity, and availability impacts on the compromised systems.

Technical Details of CVE-2023-26477

This section delves into the specifics of the vulnerability, the affected systems and versions, as well as the exploitation mechanism employed by threat actors.

Vulnerability Description

The vulnerability allows for the improper neutralization of directives in dynamically evaluated code, enabling threat actors to inject malicious scripts via the

newThemeName

request parameter in the XWiki Platform.

Affected Systems and Versions

Systems running XWiki Platform versions between 6.2.4 to 13.10.10, 14.0 to 14.4.6, and 14.5 to 14.9-rc-1 are susceptible to this vulnerability, with the potential for unauthorized code execution.

Exploitation Mechanism

Threat actors can exploit the vulnerability by manipulating the

newThemeName

request parameter to inject arbitrary wiki syntax, compromising the affected systems' security and integrity.

Mitigation and Prevention

To address CVE-2023-26477, immediate remediation steps, long-term security practices, and the importance of patching and updating the affected software are crucial.

Immediate Steps to Take

Organizations should apply the patches provided by XWiki Platform for versions 13.10.10, 14.4.6, and 14.9-rc-1 to mitigate the vulnerability. Additionally, monitoring and restricting user input to prevent malicious injections are essential steps to enhance security.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and providing security awareness training to mitigate future vulnerabilities are recommended long-term security measures.

Patching and Updates

Regularly updating the XWiki Platform to the latest secure versions, implementing security patches promptly, and staying informed about security advisories and best practices can help prevent and mitigate potential vulnerabilities like CVE-2023-26477.