CVE-2022-45390 in loader.io Plugin
Summary
by MITRE • 11/15/2022
A missing permission check in Jenkins loader.io Plugin 1.0.1 and earlier allows attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.
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Analysis
by VulDB Data Team • 11/15/2022
The vulnerability identified as CVE-2022-45390 resides within the loader.io Plugin for Jenkins, specifically affecting versions 1.0.1 and earlier. This issue represents a critical authorization flaw that undermines the fundamental security model of Jenkins credential management systems. The vulnerability manifests as a missing permission check that allows unauthorized users to bypass normal access controls and discover credential identifiers stored within the Jenkins environment. Such a flaw directly violates the principle of least privilege and demonstrates a significant gap in the plugin's security implementation.
The technical nature of this vulnerability stems from the absence of proper authorization validation within the plugin's credential enumeration functionality. When users with only Overall/Read permission attempt to access credential information, the system fails to verify whether they should have access to such sensitive data. This missing validation creates an information disclosure vulnerability that can be exploited by attackers who have minimal access rights to the Jenkins instance. The flaw operates at the application layer and specifically targets the credential management subsystem, making it particularly dangerous for environments where multiple users have varying levels of access permissions.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable intelligence for subsequent attack phases. By enumerating credential IDs, adversaries can identify which credentials are available within the system and potentially target specific credential stores for further exploitation. This vulnerability affects the confidentiality aspect of the CIA triad, as it allows unauthorized access to credential information that should remain protected. The attack surface is particularly concerning in enterprise environments where Jenkins is used to manage numerous credentials for various systems, applications, and services.
From a cybersecurity framework perspective, this vulnerability maps directly to CWE-284, which addresses improper access control, and aligns with ATT&CK technique T1552.001 for credentials from password storage modules. The missing permission check represents a classic authorization bypass vulnerability that can be exploited to gain unauthorized access to sensitive information. Organizations using Jenkins loader.io Plugin versions prior to the fix are at significant risk, as this vulnerability can be exploited by both internal and external attackers who have gained access to systems with Overall/Read permissions.
The recommended mitigation strategy involves immediate upgrading of the loader.io Plugin to a version that includes proper permission checks and authorization validation. Administrators should also conduct thorough audits of all installed plugins to identify similar vulnerabilities and ensure that access controls are properly enforced throughout the Jenkins environment. Additional security measures should include monitoring for unauthorized credential enumeration attempts and implementing network-level controls to limit access to Jenkins instances. Organizations should also consider implementing role-based access controls that align with the principle of least privilege and regularly review permission assignments to minimize the risk of unauthorized credential access.