CVE-2020-2216

Vulnerability

Details

The Jenkins Zephyr for JIRA Test Management Plugin version 1.5 and earlier contains a missing permission check in an unspecified endpoint. This oversight allows any user with the Overall/Read permission to trigger connections to attacker-specified HTTP servers using attacker-controlled usernames and passwords [1].

Exploitation

An attacker with only Overall/Read access (the lowest permission level in Jenkins) can exploit this vulnerability by providing a malicious HTTP server URL along with arbitrary credentials. The plugin will then attempt to connect to that server using the supplied credentials, effectively making the Jenkins server an intermediary for credential-based attacks or data exfiltration.

Impact

Successful exploitation could lead to the disclosure of sensitive information if the attacker's server logs the attempted credentials, or allow the attacker to probe internal networks by using the Jenkins server as a pivot point. Additionally, the attacker could potentially capture Jenkins credentials if the plugin prompts for them during the connection attempt.

Mitigation

As of the advisory date (2020-07-02), no patched version had been released. The vulnerability remains unresolved in versions 1.5 and earlier. Users should upgrade to a newer version if available, or restrict Overall/Read permissions to trusted users only [1][2].