CVE-2023-50777 is a vulnerability identified in the Jenkins PaaSLane Estimate Plugin versions 1.0.4 and earlier. The core issue is that the plugin does not mask PaaSLane authentication tokens when they are displayed on the job configuration form within Jenkins. This means that sensitive authentication tokens, which are intended to be confidential, are visible in plaintext to anyone who has access to the job configuration interface. The vulnerability is classified under CWE-863, which relates to improper authorization, indicating that the plugin fails to adequately protect sensitive information from unauthorized viewing. The CVSS v3.1 base score is 4.3, reflecting a medium severity level. The vector indicates that the attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring privileges (PR:L) but no user interaction (UI:N). The impact is limited to confidentiality (C:L), with no impact on integrity or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability could allow an attacker with some level of access to Jenkins (at least with privileges to view job configurations) to observe and potentially capture authentication tokens, which could then be used to access PaaSLane services or resources that rely on these tokens for authentication.

For European organizations, the exposure of PaaSLane authentication tokens through Jenkins job configurations could lead to unauthorized access to cloud platform services or resources managed via PaaSLane. Since Jenkins is widely used in DevOps pipelines across Europe, especially in industries with heavy cloud integration such as finance, manufacturing, and technology sectors, this vulnerability could facilitate lateral movement or privilege escalation within the CI/CD environment. The confidentiality breach could result in unauthorized data access or manipulation in connected cloud environments, potentially leading to data leaks or disruption of cloud services. While the vulnerability does not directly affect system integrity or availability, the compromise of authentication tokens can indirectly enable further attacks. Organizations relying on Jenkins for automated deployments and cloud resource management should be particularly cautious, as attackers gaining token access could manipulate deployments or exfiltrate sensitive data from cloud platforms. The medium severity rating suggests that while the risk is not critical, it is significant enough to warrant prompt attention to prevent potential misuse.

To mitigate this vulnerability, European organizations should first restrict access to Jenkins job configuration pages strictly to trusted and authorized personnel, minimizing the risk of token exposure. Implement role-based access control (RBAC) within Jenkins to ensure that only users with a legitimate need can view or edit job configurations. Additionally, organizations should consider rotating PaaSLane authentication tokens regularly to limit the window of opportunity for attackers if tokens are exposed. Monitoring and auditing access logs for unusual access patterns to job configurations can help detect potential exploitation attempts. Until an official patch is released, organizations might explore temporary workarounds such as removing sensitive tokens from job configurations or storing them securely outside Jenkins using credential management plugins that mask or encrypt tokens. Finally, educating DevOps teams about the risks of exposing authentication tokens in UI forms and encouraging secure handling of credentials will reduce inadvertent exposures.