CVE-2019-10342 in Docker Plugin
Summary
by MITRE
A missing permission check in Jenkins Docker Plugin 1.1.6 and earlier in various 'fillCredentialsIdItems' methods allowed users with Overall/Read access to enumerate credentials ID of credentials stored in Jenkins.
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Analysis
by VulDB Data Team • 10/24/2023
The vulnerability identified as CVE-2019-10342 represents a critical authorization bypass flaw within the Jenkins Docker Plugin version 1.1.6 and earlier. This issue stems from insufficient permission validation mechanisms that govern access to credential enumeration functions. The affected 'fillCredentialsIdItems' methods fail to properly verify whether authenticated users possess adequate privileges before exposing credential identifiers. Such a weakness fundamentally undermines the principle of least privilege and creates an unauthorized information disclosure risk that can be exploited by malicious actors with minimal privileges.
The technical implementation flaw manifests in the absence of proper access control checks within the Docker Plugin's credential handling routines. When users with only Overall/Read permissions attempt to interact with credential enumeration endpoints, the system fails to validate their authorization level against the sensitive credential store. This missing permission check creates a pathway for unauthorized information disclosure where attackers can discover credential identifiers without possessing the necessary permissions to access or utilize those credentials. The vulnerability exists in the plugin's user interface components that populate credential selection dropdowns, specifically within methods designed to provide credential ID lists for various Docker operations.
The operational impact of this vulnerability extends beyond simple information disclosure, creating potential attack vectors for more sophisticated exploitation attempts. An attacker with Overall/Read access can enumerate all credential identifiers stored within Jenkins, effectively mapping the organization's credential landscape without necessarily having access to the actual credential values. This intelligence gathering capability enables attackers to plan targeted attacks against specific credential stores, potentially leading to privilege escalation or lateral movement within the Jenkins environment. The vulnerability particularly affects organizations that rely heavily on credential management within their CI/CD pipelines, as it exposes the underlying credential infrastructure to unauthorized reconnaissance.
Organizations should implement immediate mitigations including updating to Jenkins Docker Plugin version 1.1.7 or later, which contains the necessary permission check fixes. Additionally, administrators should review and enforce proper access controls within Jenkins, ensuring that users with Overall/Read permissions cannot enumerate credentials they should not access. The remediation process should include verifying that all credential enumeration methods properly validate user permissions against the specific credential store being accessed. This vulnerability aligns with CWE-284 which addresses improper access control, and maps to ATT&CK technique T1552.001 for credentials from password storage modules, as it enables unauthorized access to credential identifiers that could later be exploited through additional attack vectors.
Security teams should also consider implementing network-level controls and monitoring for unusual credential enumeration patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of comprehensive access control validation across all plugin components, particularly those handling sensitive data like credentials. Organizations should conduct thorough security assessments of their Jenkins plugin ecosystem to identify similar permission bypass vulnerabilities that could exist in other third-party integrations. Regular security audits of authentication and authorization mechanisms within CI/CD platforms remain essential for maintaining robust security postures against such privilege escalation threats.