CVE-2023-3315 in Team Concert Plugin
Summary
by MITRE • 06/20/2023
Missing permission checks in Jenkins Team Concert Plugin 2.4.1 and earlier allow attackers with Overall/Read permission to check for the existence of an attacker-specified file path on the Jenkins controller file system.
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Analysis
by VulDB Data Team • 12/11/2024
The vulnerability identified as CVE-2023-3315 resides within the Jenkins Team Concert Plugin version 2.4.1 and earlier, representing a critical authorization bypass issue that fundamentally undermines the security model of the Jenkins continuous integration platform. This flaw specifically targets the plugin's handling of file system operations, creating a scenario where unauthorized users can exploit a lack of proper permission validation to probe the underlying file system of the Jenkins controller. The vulnerability manifests when an attacker with merely Overall/Read permission attempts to access file system paths, demonstrating that the plugin fails to enforce adequate access controls during file existence checks.
The technical implementation of this vulnerability stems from a missing permission check mechanism within the plugin's file system interaction code. When a user with limited privileges attempts to verify the existence of a specific file path, the plugin does not validate whether the requesting user has appropriate authorization to perform such an operation. This design flaw allows for information disclosure through path traversal attacks, where attackers can systematically test various file paths to determine what files exist on the Jenkins controller's file system. The absence of proper authorization checks creates a reconnaissance vector that can be leveraged to map the controller's file structure and potentially identify sensitive files or directories.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to conduct systematic reconnaissance of the Jenkins controller's file system. This capability can lead to further exploitation opportunities, including the identification of configuration files, credential storage locations, or other sensitive artifacts that may contain authentication tokens, API keys, or other confidential information. The vulnerability essentially provides an attacker with a primitive for file system enumeration that bypasses the standard Jenkins permission model, potentially enabling more sophisticated attacks such as privilege escalation or lateral movement within the CI/CD environment. Organizations relying on Jenkins Team Concert Plugin for their continuous integration workflows face significant risk from this vulnerability, as it undermines the fundamental security assumptions of the platform's access control mechanisms.
Mitigation strategies for CVE-2023-3315 should prioritize immediate plugin updates to versions that address the missing permission checks, with administrators urgently reviewing and applying security patches from the Jenkins plugin repository. Organizations should also implement additional monitoring and logging of file system access patterns within Jenkins environments to detect potential exploitation attempts. The vulnerability aligns with CWE-284, which describes improper access control, and represents a clear violation of the principle of least privilege that should govern all access control implementations within security-critical systems. Security teams should consider implementing network-level restrictions to limit access to Jenkins controllers and establish automated vulnerability scanning processes that can identify and remediate similar permission bypass issues across the entire Jenkins ecosystem. The ATT&CK framework categorizes this vulnerability under T1083, File and Directory Discovery, highlighting its potential for reconnaissance activities that precede more serious exploitation attempts.