CVE-2021-21672 : Vulnerability Insights and Analysis

Jenkins Selenium HTML report Plugin 1.0 and earlier versions are affected by a vulnerability that allows XML external entity (XXE) attacks due to misconfigured XML parsers.

Understanding CVE-2021-21672

This CVE affects Jenkins Selenium HTML report Plugin versions, allowing attackers to exploit the XXE vulnerability.

What is CVE-2021-21672?

CVE-2021-21672 is a security vulnerability present in Jenkins Selenium HTML report Plugin versions 1.0 and earlier. The issue arises from the lack of proper configuration of the XML parser, making the plugin susceptible to XXE attacks.

The Impact of CVE-2021-21672

The vulnerability can be exploited by attackers to perform XXE attacks, potentially leading to unauthorized access, data leakage, and other malicious activities.

Technical Details of CVE-2021-21672

This section provides more insights into the vulnerability in terms of its description, affected systems, and exploitation mechanism.

Vulnerability Description

Jenkins Selenium HTML report Plugin 1.0 and earlier versions do not properly configure their XML parsers, allowing malicious entities to exploit XXE attacks.

Affected Systems and Versions

The vulnerability affects Jenkins Selenium HTML report Plugin versions up to 1.0 with custom installations.

Exploitation Mechanism

Attackers can leverage the misconfigured XML parsers in the affected plugin to inject and execute malicious XML payloads, leading to XXE attacks.

Mitigation and Prevention

To address CVE-2021-21672, immediate actions, long-term security best practices, and the importance of patching and updates are discussed.

Immediate Steps to Take

Users should update Jenkins Selenium HTML report Plugin to a patched version above 1.0 to mitigate the risk of XXE attacks. Additionally, restrict access to vulnerable systems.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and stay informed about potential vulnerabilities in Jenkins plugins.

Patching and Updates

Regularly check for updates and patches released by Jenkins for the plugin. Promptly apply security patches to ensure ongoing protection against XXE attacks.