CVE-2025-31725 in monitor-remote-job Plugin
Summary
by MITRE • 04/02/2025
Jenkins monitor-remote-job Plugin 1.0 stores passwords unencrypted in job config.xml files on the Jenkins controller where they can be viewed by users with Extended Read permission, or access to the Jenkins controller file system.
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Analysis
by VulDB Data Team • 04/03/2025
The vulnerability identified as CVE-2025-31725 affects the Jenkins monitor-remote-job plugin version 1.0, presenting a critical security weakness in how sensitive authentication credentials are handled within the Jenkins ecosystem. This flaw resides in the plugin's configuration storage mechanism where passwords are persisted in plaintext format within the job config.xml files on the Jenkins controller server. The issue stems from inadequate cryptographic protection measures during credential storage, creating a persistent exposure point that undermines the fundamental security principles of credential management within continuous integration and deployment environments.
The technical implementation of this vulnerability demonstrates a clear violation of security best practices and can be categorized under CWE-312, which specifically addresses the exposure of sensitive information through improper storage of credentials. The flaw operates at the configuration persistence layer where user-provided authentication credentials for remote job monitoring are directly written to disk without any form of encryption or obfuscation. This represents a design flaw in the plugin's data handling architecture that fails to implement proper credential protection mechanisms. The vulnerability is particularly concerning because it affects the core Jenkins controller filesystem, making it accessible to any user who possesses Extended Read permission or direct file system access to the controller.
The operational impact of this vulnerability extends beyond simple credential exposure to encompass broader security implications for CI/CD pipeline integrity and organizational security posture. Attackers who gain access to Jenkins controller file systems or obtain Extended Read permissions can directly extract plaintext passwords from the job configuration files, enabling them to compromise remote job execution environments and potentially escalate their access to other systems within the organization's infrastructure. This vulnerability directly aligns with ATT&CK technique T1552.001, which covers "Credentials In Files" and represents a common attack vector used by adversaries to obtain authentication credentials. The exposure of these credentials can lead to unauthorized access to remote systems, data exfiltration, and potential lateral movement within network environments where Jenkins is integrated with other security controls.
Organizations utilizing the monitor-remote-job plugin version 1.0 should immediately implement multiple layers of mitigation strategies to address this vulnerability. The primary recommendation involves upgrading to a patched version of the plugin that implements proper encryption for stored credentials, ensuring that all authentication information is protected through strong cryptographic mechanisms before being persisted to disk. Additionally, access controls should be strictly enforced to limit Extended Read permissions to only trusted personnel, while implementing file system level protections that restrict direct access to Jenkins controller configuration files. Network segmentation and privilege separation measures should be enhanced to minimize the blast radius of potential credential compromise. The vulnerability also highlights the importance of regular security audits of Jenkins plugin configurations and implementation of automated credential rotation mechanisms to reduce the window of opportunity for attackers to exploit exposed credentials. Organizations should also consider implementing monitoring solutions that can detect unauthorized access attempts to Jenkins configuration files and establish incident response procedures specifically tailored to credential exposure events.