CVE-2020-2226 Explained : Impact and Mitigation

Jenkins Matrix Authorization Strategy Plugin 2.6.1 and earlier versions are affected by a stored cross-site scripting vulnerability due to unescaped user names in the configuration.

Understanding CVE-2020-2226

This CVE involves a security issue in the Jenkins Matrix Authorization Strategy Plugin that allows for stored cross-site scripting attacks.

What is CVE-2020-2226?

CVE-2020-2226 is a vulnerability in Jenkins Matrix Authorization Strategy Plugin versions 2.6.1 and earlier, where user names displayed in the configuration are not properly escaped, leading to a stored cross-site scripting vulnerability.

The Impact of CVE-2020-2226

The vulnerability could be exploited by attackers to inject malicious scripts into the configuration, potentially leading to unauthorized access, data theft, or other malicious activities.

Technical Details of CVE-2020-2226

This section provides more technical insights into the CVE.

Vulnerability Description

The Jenkins Matrix Authorization Strategy Plugin 2.6.1 and earlier versions do not escape user names displayed in the configuration, allowing for stored cross-site scripting attacks.

Affected Systems and Versions

Product: Jenkins Matrix Authorization Strategy Plugin
Vendor: Jenkins project
Versions Affected: <= 2.6.1 (unspecified version type: custom)

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into user names within the configuration, which can then be executed in the context of other users accessing the affected system.

Mitigation and Prevention

Protecting systems from CVE-2020-2226 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Jenkins Matrix Authorization Strategy Plugin to a patched version that addresses the vulnerability.
Regularly monitor and review configurations for any unauthorized changes or suspicious entries.

Long-Term Security Practices

Implement input validation mechanisms to sanitize user inputs and prevent script injection attacks.
Educate users on secure configuration practices and the risks associated with unescaped user inputs.

Patching and Updates

Ensure timely installation of security patches and updates provided by Jenkins project to mitigate the vulnerability effectively.