CVE-2020-2286 Explained : Impact and Mitigation

Jenkins Role-based Authorization Strategy Plugin 3.0 and earlier versions have a vulnerability that allows permissions to be granted based on outdated configurations.

Understanding CVE-2020-2286

This CVE affects the Jenkins Role-based Authorization Strategy Plugin, impacting versions 2.12 and earlier.

What is CVE-2020-2286?

This CVE involves the failure to properly invalidate a permission cache when configuration changes occur, leading to permissions being granted based on outdated settings.

The Impact of CVE-2020-2286

The vulnerability can result in unauthorized access and incorrect permissions within Jenkins instances, potentially compromising the security of the system.

Technical Details of CVE-2020-2286

The technical aspects of this CVE are as follows:

Vulnerability Description

The Jenkins Role-based Authorization Strategy Plugin 3.0 and earlier versions do not correctly update the permission cache when configuration changes are made, allowing permissions to be granted based on outdated settings.

Affected Systems and Versions

Product: Jenkins Role-based Authorization Strategy Plugin
Vendor: Jenkins project
Versions Affected:
2.12 (custom version)
<= 3.0 (custom version)

Exploitation Mechanism

The vulnerability can be exploited by an attacker who can manipulate the configuration of the plugin to gain unauthorized access or elevate their privileges within the Jenkins environment.

Mitigation and Prevention

To address CVE-2020-2286, follow these steps:

Immediate Steps to Take

Upgrade the Jenkins Role-based Authorization Strategy Plugin to a patched version.
Monitor and review permissions regularly to ensure they align with the current configuration.

Long-Term Security Practices

Implement regular security audits and reviews of Jenkins configurations.
Educate users on best practices for configuring and managing permissions within Jenkins.

Patching and Updates

Apply security patches and updates provided by Jenkins project promptly to mitigate the vulnerability and enhance system security.