CVE-2021-21662 : Vulnerability Insights and Analysis

A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 10.0.1 and earlier allows attackers with Overall/Read permission to enumerate credentials ID of credentials stored in Jenkins.

Understanding CVE-2021-21662

This CVE highlights a vulnerability in the Jenkins XebiaLabs XL Deploy Plugin that could be exploited by attackers with specific permissions.

What is CVE-2021-21662?

CVE-2021-21662 refers to a missing permission check in Jenkins XebiaLabs XL Deploy Plugin version 10.0.1 and earlier. This vulnerability enables individuals with Overall/Read permission to identify credentials ID stored within Jenkins.

The Impact of CVE-2021-21662

The impact of this vulnerability is significant as it allows unauthorized users to access sensitive credentials stored in Jenkins, leading to potential security breaches and unauthorized access to confidential information.

Technical Details of CVE-2021-21662

This section provides a deeper insight into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from a missing permission check in the affected versions of the Jenkins XebiaLabs XL Deploy Plugin, specifically version 10.0.1 and earlier. Attackers with Overall/Read permission can exploit this flaw to enumerate credentials ID stored in Jenkins.

Affected Systems and Versions

The Jenkins XebiaLabs XL Deploy Plugin versions up to and including 10.0.1 are affected by this vulnerability. Users utilizing these versions are at risk of unauthorized access to stored credentials.

Exploitation Mechanism

To exploit this vulnerability, attackers with Overall/Read permission need to identify and enumerate the credentials ID within Jenkins instances. This could lead to potential security compromises.

Mitigation and Prevention

Protecting systems against CVE-2021-21662 requires immediate action and implementation of necessary security measures.

Immediate Steps to Take

Users should upgrade the Jenkins XebiaLabs XL Deploy Plugin to a secure version beyond 10.0.1 to mitigate the risk of unauthorized access to credentials. Additionally, restricting permissions can help prevent exploitation.

Long-Term Security Practices

Regularly monitoring and updating Jenkins plugins, along with conducting security audits, can enhance the overall security posture of the system and prevent similar vulnerabilities.

Patching and Updates

Staying informed about security advisories from Jenkins and promptly applying patches and updates can prevent exploitation of known vulnerabilities.