CVE-2020-2202 in Fortify on Demand Plugin
Summary
by MITRE
A missing permission check in Jenkins Fortify on Demand Plugin 6.0.0 and earlier in form-related 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 • 10/28/2020
The vulnerability described in CVE-2020-2202 represents a critical authorization flaw within the Jenkins Fortify on Demand Plugin version 6.0.0 and earlier. This issue stems from a missing permission check in form-related methods that are responsible for handling user inputs and credential management within the Jenkins environment. The flaw specifically affects the plugin's ability to properly validate user permissions when processing form data, creating an unauthorized access vector that can be exploited by individuals with minimal privileges.
The technical implementation of this vulnerability resides in the plugin's insufficient validation mechanisms within its form processing components. When users with only Overall/Read access attempt to interact with form elements related to credential management, the plugin fails to properly verify whether these users possess the necessary permissions to access or enumerate credential identifiers. This missing authorization check creates a pathway for privilege escalation through information disclosure, as attackers can leverage the form-related methods to discover credential IDs without proper authorization. The flaw operates at the application layer and specifically targets the plugin's credential enumeration functionality.
From an operational impact perspective, this vulnerability poses significant security risks to Jenkins environments that utilize the Fortify on Demand Plugin. Attackers with read-only access can exploit this weakness to discover credential IDs stored within Jenkins, potentially enabling them to craft targeted attacks against these specific credentials. The enumeration of credential IDs provides attackers with valuable intelligence that can be used in conjunction with other exploitation techniques or social engineering campaigns. This vulnerability undermines the principle of least privilege and can lead to credential compromise, unauthorized system access, and potential lateral movement within the network infrastructure.
The vulnerability aligns with CWE-284, which addresses improper access control, and demonstrates how insufficient authorization checks can create security gaps in software applications. From an attack framework perspective, this issue corresponds to techniques described in the MITRE ATT&CK framework under credential access and privilege escalation categories. Organizations utilizing Jenkins with this plugin version face increased risk of credential theft and unauthorized access to connected systems, particularly when these credentials are used for authentication with external services such as Fortify on Demand platforms.
Mitigation strategies for this vulnerability include immediate upgrade to Jenkins Fortify on Demand Plugin version 6.0.1 or later, which contains the necessary permission checks to prevent unauthorized credential enumeration. Administrators should also implement additional security controls such as restricting access to Jenkins form interfaces, enabling two-factor authentication, and regularly auditing user permissions and access logs. Network segmentation and monitoring of Jenkins access patterns can help detect potential exploitation attempts. Organizations should also conduct thorough security assessments of their Jenkins environments to identify similar permission flaws in other plugins and ensure proper implementation of authorization mechanisms across all application components.