CVE-2020-2154

Vulnerability

Description Jenkins Zephyr for JIRA Test Management Plugin versions 1.5 and earlier stores credentials (e.g., API tokens, passwords) in plain text in a global configuration file on the Jenkins master file system. This violates the principle of secure credential storage, as any user with read access to the master's filesystem can retrieve the credentials [1][2].

Exploitation

An attacker with direct filesystem access to the Jenkins master (e.g., via compromised OS account or another vulnerability) can read the configuration file and extract the stored credentials. No authentication is required beyond the ability to access the master's file system. The plugin does not encrypt or obfuscate the credentials, making them trivially recoverable [3].

Impact

Successful exploitation allows an attacker to obtain the stored credentials, which could be used to access external services (e.g., JIRA) with the same privileges as the Jenkins integration. This could lead to unauthorized data access, modification, or further lateral movement within the connected systems.

Mitigation

As of the advisory publication date (2020-03-09), no fix was available for this plugin; the issue was considered unresolved [2]. Users are advised to restrict access to the Jenkins master file system and monitor for any signs of unauthorized access. Upgrading to a patched version (if later released) or migrating to alternative plugins is recommended.