CVE-2021-32722 : Vulnerability Insights and Analysis

GlobalNewFiles is a mediawiki extension. Versions prior to 48be7adb70568e20e961ea1cb70904454a671b1d are affected by an uncontrolled resource consumption vulnerability. This could overwhelm Database servers due to improper load balancing. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-32722

This section delves into the details of the CVE-2021-32722 vulnerability in GlobalNewFiles.

What is CVE-2021-32722?

GlobalNewFiles, a mediawiki extension, has a vulnerability where a large number of page moves in a short time could overload Database servers due to load balancing issues. The lack of an appropriate index exacerbates the problem. It is advisable to limit usage or enable additional rate limits at the MediaWiki level.

The Impact of CVE-2021-32722

The vulnerability has a CVSS base score of 6.5, with a medium severity rating. It poses a high availability impact, requiring low privileges for exploitation. However, it does not affect confidentiality or integrity.

Technical Details of CVE-2021-32722

Explore the technical aspects of CVE-2021-32722 to understand its implications further.

Vulnerability Description

The vulnerability stems from uncontrolled resource consumption, leading to Database server overload during rapid page movements.

Affected Systems and Versions

Versions of GlobalNewFiles prior to 48be7adb70568e20e961ea1cb70904454a671b1d are susceptible to this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by initiating a large number of page moves in a short period, triggering Database server overloads.

Mitigation and Prevention

Find out how to mitigate the CVE-2021-32722 vulnerability and establish preventive measures.

Immediate Steps to Take

To mitigate the risk, avoid excessive usage of the GlobalNewFiles extension or enforce additional rate limits at the MediaWiki level.

Long-Term Security Practices

Implement long-term security measures by ensuring proper load balancing and establishing appropriate indexes to prevent database overload.

Patching and Updates

A patch is available in version 48be7adb70568e20e961ea1cb70904454a671b1d. It is crucial to update to this version to eliminate the vulnerability.