CVE-2020-2299 : Exploit Details and Defense Strategies

Jenkins Active Directory Plugin 2.19 and earlier allows attackers to log in as any user if a magic constant is used as the password.

Understanding CVE-2020-2299

Jenkins Active Directory Plugin is affected by a vulnerability that enables unauthorized access to user accounts.

What is CVE-2020-2299?

CVE-2020-2299 is a security vulnerability in Jenkins Active Directory Plugin versions 2.19 and earlier that permits attackers to gain unauthorized access by exploiting a flaw in the login mechanism.

The Impact of CVE-2020-2299

The vulnerability allows malicious actors to log in as any user by utilizing a specific constant as the password, compromising the integrity and security of the affected systems.

Technical Details of CVE-2020-2299

Jenkins Active Directory Plugin version 2.19 and below are susceptible to exploitation.

Vulnerability Description

The issue arises from improper authentication (CWE-287) in the affected plugin, enabling unauthorized access through the use of a specific password constant.

Affected Systems and Versions

Jenkins Active Directory Plugin version 1.44 (custom version)
Jenkins Active Directory Plugin versions less than or equal to 2.19
Jenkins Active Directory Plugin version 2.16.1 is unaffected

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging the flaw in the login process, allowing them to impersonate any user by using a specific constant as the password.

Mitigation and Prevention

It is crucial to take immediate action to secure systems and prevent unauthorized access.

Immediate Steps to Take

Update Jenkins Active Directory Plugin to a patched version.
Implement strong password policies and avoid using predictable constants.
Monitor login activities for any suspicious behavior.

Long-Term Security Practices

Regularly review and update plugins to address security vulnerabilities.
Conduct security training for users to enhance awareness of best practices.

Patching and Updates

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