CVE-2022-41242 is a medium-severity vulnerability identified in the Jenkins extreme-feedback Plugin version 1.7 and earlier. The vulnerability arises due to a missing permission check within the plugin, which allows users with Overall/Read permissions in Jenkins to perform unauthorized actions. Specifically, these users can discover sensitive information such as job names associated with lamps, as well as the MAC and IP addresses of these lamps. Additionally, they can rename lamps without proper authorization. The vulnerability is classified under CWE-862, indicating a missing authorization issue. The CVSS v3.1 base score is 5.4, reflecting a network attack vector with low attack complexity, requiring privileges (Overall/Read) but no user interaction, and resulting in limited confidentiality and integrity impacts without affecting availability. The vulnerability does not require elevated privileges beyond Overall/Read, which is a relatively common permission level in Jenkins environments. No known exploits in the wild have been reported, and no official patches or mitigation links have been provided in the source information. The plugin's function is to provide visual feedback via lamps connected to Jenkins jobs, and this vulnerability could allow attackers to gather network-related information and manipulate device identifiers, potentially aiding further reconnaissance or social engineering attacks within the Jenkins environment.

For European organizations using Jenkins with the extreme-feedback Plugin, this vulnerability could lead to unauthorized disclosure of internal job names and network device information such as MAC and IP addresses. While the direct impact on confidentiality and integrity is limited, the information leakage could facilitate targeted attacks, including lateral movement or social engineering within the organization. Renaming lamps could cause confusion or mislead operators relying on these visual indicators, potentially disrupting monitoring or alerting workflows. Organizations in sectors with stringent compliance requirements (e.g., finance, healthcare, critical infrastructure) may face increased risk if attackers leverage this vulnerability as part of a broader attack chain. However, since exploitation requires Overall/Read permissions in Jenkins, the threat is somewhat mitigated by proper access control. The absence of known active exploitation reduces immediate risk but does not eliminate the need for remediation.

European organizations should audit Jenkins user permissions to ensure that Overall/Read access is granted only to trusted users. Restricting this permission reduces the attack surface. Administrators should monitor Jenkins logs for unusual activities related to the extreme-feedback Plugin, such as unexpected lamp renaming or access patterns. Since no official patch is referenced, organizations should check the Jenkins plugin repository or vendor advisories regularly for updates addressing this vulnerability. As a temporary measure, consider disabling the extreme-feedback Plugin if it is not essential to operations. Network segmentation and firewall rules can limit exposure of lamps and Jenkins servers to only necessary users and systems. Additionally, organizations should educate Jenkins users about the risks of sharing credentials and enforce strong authentication mechanisms to prevent unauthorized access. Implementing role-based access control (RBAC) and regularly reviewing permissions can further mitigate exploitation risks.