CVE-2019-10381 in Codefresh Integration Plugin
Summary
by MITRE
Jenkins Codefresh Integration Plugin 1.8 and earlier disables SSL/TLS and hostname verification globally for the Jenkins master JVM.
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Analysis
by VulDB Data Team • 07/22/2020
The vulnerability identified as CVE-2019-10381 affects the Jenkins Codefresh Integration Plugin version 1.8 and earlier, presenting a critical security flaw that compromises the integrity of network communications within Jenkins environments. This issue arises from the plugin's improper handling of SSL/TLS security protocols, specifically disabling essential certificate validation mechanisms that protect against man-in-the-middle attacks and unauthorized access to sensitive data.
The technical flaw manifests through the plugin's global modification of the Jenkins master JVM's security settings, where it systematically disables both SSL/TLS certificate validation and hostname verification across the entire Jenkins instance. This configuration change fundamentally undermines the cryptographic security measures that are essential for establishing secure communication channels between Jenkins and external systems. The vulnerability operates at the JVM level, making it particularly dangerous as it affects all network connections initiated by the Jenkins master rather than being confined to specific plugin functionalities.
The operational impact of this vulnerability is severe and multifaceted, creating numerous attack vectors for malicious actors who can exploit the weakened security posture. Attackers can leverage this flaw to perform man-in-the-middle attacks, intercept sensitive data transmitted between Jenkins and external services, and potentially gain unauthorized access to build artifacts, credentials, and other confidential information. The global nature of the SSL/TLS disabling means that all Jenkins communications become vulnerable, including those to external repositories, build servers, and integration endpoints. This vulnerability particularly affects organizations that rely on Jenkins for continuous integration and deployment processes, where the compromise of build environments can lead to supply chain attacks and code injection exploits.
Organizations should implement immediate mitigations including upgrading to Jenkins Codefresh Integration Plugin version 1.9 or later, which addresses this vulnerability through proper SSL/TLS configuration handling. Additionally, security teams must conduct comprehensive audits of their Jenkins environments to identify any instances where the vulnerable plugin has been installed and verify that SSL/TLS security settings have not been inadvertently compromised. The vulnerability aligns with CWE-295, which addresses improper certificate validation, and relates to ATT&CK technique T1071.004 for application layer protocol: DNS, as attackers can exploit the weakened security to manipulate network communications. System administrators should also consider implementing network-level monitoring and intrusion detection systems to identify suspicious activities that may indicate exploitation attempts, while ensuring that all Jenkins instances maintain proper certificate validation settings. The remediation process requires careful verification that no other plugins or configurations have introduced similar security weaknesses, as this vulnerability demonstrates the critical importance of maintaining secure communication protocols in automated build environments where code integrity and security are paramount.