CVE-2023-26476 Explained : Impact and Mitigation

This CVE involves the exposure of sensitive information to an unauthorized actor in Two XWiki Platform UIs. It was published on March 2, 2023, by GitHub_M.

Understanding CVE-2023-26476

This vulnerability, identified by the Common Vulnerabilities and Exposures ID CVE-2023-26476, affects XWiki Platform UIs.

What is CVE-2023-26476?

XWiki Platform, a generic wiki platform, has a vulnerability that allows unauthorized actors to access sensitive information by deducing the content of password fields through repeated calls to

LiveTableResults

and

WikisLiveTableResultsMacros

.

The Impact of CVE-2023-26476

With a CVSS v3.1 base score of 7.5 and a high severity level, this vulnerability poses a significant risk to confidentiality. The attack complexity is considered low, with a network-based attack vector.

Technical Details of CVE-2023-26476

This section covers specific technical details related to CVE-2023-26476.

Vulnerability Description

The vulnerability in XWiki Platform allows unauthorized actors to retrieve sensitive information by exploiting the behavior of password fields in the UIs.

Affected Systems and Versions

The XWiki Platform versions affected by this vulnerability include:

Versions >= 3.2-m3, < 13.4.4
Versions >= 13.5.0, < 13.10.9
Versions >= 14.0.0, < 14.7-rc-1

Exploitation Mechanism

The unauthorized access to sensitive information is achieved by making repeated calls to certain functions in XWiki Platform UIs, leading to the exposure of password field content.

Mitigation and Prevention

Addressing CVE-2023-26476 requires immediate action to secure the XWiki Platform environment and prevent unauthorized access to sensitive data.

Immediate Steps to Take

It is recommended to upgrade XWiki Platform to versions 14.7-rc-1, 13.4.4, or 13.10.9 and higher. For versions >= 3.2-m3, applying a manual patch to

LiveTableResults

and

WikisLiveTableResultsMacros

can mitigate the vulnerability.

Long-Term Security Practices

Implementing robust security measures, such as access controls, encryption, and regular security assessments, can enhance the overall security posture of XWiki Platform installations.

Patching and Updates

Regularly monitoring for security advisories and promptly applying patches and updates provided by XWiki to fix vulnerabilities and strengthen the security of the platform are essential practices to prevent exploitation of known vulnerabilities like CVE-2023-26476.