Learn about CVE-2021-21663, a security vulnerability in Jenkins XebiaLabs XL Deploy Plugin versions prior to 7.5.8, allowing unauthorized users with specific permissions to access sensitive data in Jenkins.
A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 7.5.8 and earlier versions allows attackers with Overall/Read permission to connect to a specified URL using specific credentials IDs, potentially exposing sensitive information stored in Jenkins.
Understanding CVE-2021-21663
This CVE pertains to a vulnerability in the Jenkins XebiaLabs XL Deploy Plugin that can be exploited by users with specific permissions to access unauthorized URLs.
What is CVE-2021-21663?
The vulnerability in Jenkins XebiaLabs XL Deploy Plugin versions prior to 7.5.8 enables attackers with Overall/Read permission to establish connections to custom URLs using credentials obtained through other means, potentially leading to a security breach.
The Impact of CVE-2021-21663
The CVE poses a significant risk as attackers can utilize the vulnerability to capture sensitive Username/password credentials stored in Jenkins, compromising the security and integrity of the system.
Technical Details of CVE-2021-21663
The technical details of CVE-2021-21663 include:
Vulnerability Description
The vulnerability arises from a missing permission check in Jenkins XebiaLabs XL Deploy Plugin, enabling unauthorized users to connect to attacker-specified URLs using credentials IDs, which can result in unauthorized access to sensitive data.
Affected Systems and Versions
The affected product is the Jenkins XebiaLabs XL Deploy Plugin, particularly versions less than 7.5.6 and less than or equal to 7.5.8, provided by the Jenkins project.
Exploitation Mechanism
Exploiting this vulnerability requires perpetrators to have Overall/Read permissions, allowing them to connect to malicious URLs using specific credentials obtained through alternative methods.
Mitigation and Prevention
To safeguard your systems from potential exploitation of CVE-2021-21663, consider the following mitigation strategies:
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Stay informed about security advisories from Jenkins project and promptly apply patches or updates to address any known vulnerabilities.