CVE-2023-32989 in Azure VM Agents Plugin
Summary
by MITRE • 05/16/2023
A cross-site request forgery (CSRF) vulnerability in Jenkins Azure VM Agents Plugin 852.v8d35f0960a_43 and earlier allows attackers to connect to an attacker-specified Azure Cloud server using attacker-specified credentials IDs obtained through another method.
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Analysis
by VulDB Data Team • 04/26/2025
This cross-site request forgery vulnerability exists within the Jenkins Azure VM Agents Plugin version 852.v8d35f0960a_43 and earlier, representing a critical security flaw that undermines the integrity of cloud infrastructure provisioning within continuous integration environments. The vulnerability allows authenticated attackers to manipulate the plugin's functionality by crafting malicious requests that force the Jenkins server to establish connections to arbitrary Azure Cloud servers using credentials that have been previously obtained through alternative attack vectors. This flaw specifically targets the plugin's handling of credential management and server connection parameters, creating a pathway for unauthorized cloud resource access.
The technical implementation of this CSRF vulnerability stems from insufficient validation of request origins and missing anti-CSRF tokens within the plugin's administrative interfaces. When administrators interact with the Azure VM Agents configuration pages, the plugin fails to properly verify that requests originate from legitimate sources within the Jenkins environment. Attackers can exploit this weakness by tricking authenticated users into visiting malicious web pages that automatically submit forged requests to the Jenkins server. These requests appear legitimate to the server because they contain valid session cookies and authentication tokens, but they modify the target Azure server parameters and credentials, effectively allowing unauthorized cloud access.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it enables attackers to potentially gain access to sensitive cloud resources and data stored within the compromised Azure environment. Organizations using Jenkins for automated deployment and testing may find their cloud infrastructure compromised, leading to potential data breaches, unauthorized resource consumption, and elevated attack surface. The vulnerability particularly affects environments where Jenkins administrators have elevated privileges and where Azure credentials are stored within the Jenkins configuration. This flaw can result in significant financial losses through unauthorized cloud resource usage, data exfiltration, and potential compliance violations in regulated industries.
Mitigation strategies should focus on immediate patching of the affected Jenkins plugin to version 853.v8d35f0960a_43 or later, which includes proper CSRF token validation and request origin verification. Organizations should also implement additional security controls such as network segmentation between Jenkins servers and cloud infrastructure, mandatory multi-factor authentication for administrative access, and regular security auditing of plugin configurations. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery flaws, and maps to ATT&CK technique T1566.001 for credential access through social engineering. Security teams should monitor for suspicious authentication patterns and implement web application firewalls to detect and block malicious CSRF requests targeting the affected plugin endpoints. Additionally, organizations should conduct comprehensive assessments of their Jenkins environments to identify other potentially vulnerable plugins and ensure proper credential management practices are in place.