CVE-2019-10433 in Dingding Plugin
Summary
by MITRE • 01/25/2023
Jenkins Dingding[??] Plugin stores credentials unencrypted in job config.xml files on the Jenkins master where they can be viewed by users with Extended Read permission, or access to the master file system.
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Analysis
by VulDB Data Team • 01/25/2023
The vulnerability identified as CVE-2019-10433 affects the Jenkins Dingding plugin, which is used to integrate Jenkins with the Dingding communication platform for notifications and alerts. This issue represents a critical security flaw in credential handling practices within the Jenkins ecosystem, specifically targeting how sensitive authentication information is stored and managed within the plugin's configuration files. The vulnerability exists in the plugin's implementation where it fails to properly encrypt or obfuscate credentials, creating a significant risk for organizations relying on Jenkins for continuous integration and deployment processes.
The technical flaw stems from the plugin's improper storage mechanism for authentication tokens and credentials within the job configuration files. When users configure the Dingding plugin to send notifications, the plugin writes sensitive information directly to the job config.xml files without implementing proper encryption or credential protection measures. This design flaw allows unauthorized users with Extended Read permission on the Jenkins master to access these configuration files and extract stored credentials, effectively bypassing the normal authentication and authorization controls that should protect sensitive information. The vulnerability is particularly concerning because Extended Read permission is often granted to users who need to view build results or job configurations, but should not have access to authentication credentials.
The operational impact of this vulnerability extends beyond simple credential exposure, as it creates a potential attack vector for privilege escalation and lateral movement within the Jenkins environment. Attackers who gain access to a Jenkins instance with Extended Read permissions can leverage this vulnerability to extract credentials for various systems including source code repositories, deployment targets, and notification services. This exposure can lead to unauthorized access to source code repositories, unauthorized deployments to production environments, and potential compromise of the entire CI/CD pipeline. The vulnerability affects organizations that use Jenkins as part of their software development lifecycle, particularly those with complex build environments where multiple teams share access to the same Jenkins master, making the impact more widespread and potentially devastating.
Organizations should immediately implement mitigations including updating to the patched version of the Jenkins Dingding plugin, reviewing and restricting Extended Read permissions to only essential personnel, and implementing additional credential management practices such as using Jenkins Credentials Binding Plugin or external credential stores. The vulnerability aligns with CWE-312 (Cleartext Storage of Sensitive Information) and represents a violation of security best practices outlined in NIST SP 800-53 and ISO/IEC 27001 standards. From an ATT&CK framework perspective, this vulnerability maps to T1552.001 (Credentials in Files) and T1078 (Valid Accounts), as it enables adversaries to obtain credentials through file system access and potentially escalate privileges through compromised authentication tokens. Regular security audits of Jenkins configurations and automated scanning for similar credential storage vulnerabilities should be implemented as part of comprehensive security monitoring programs to prevent similar issues from occurring in other plugins or systems.