CVE-2022-34795 in Deployment Dashboard Plugin
Summary
by MITRE • 06/30/2022
Jenkins Deployment Dashboard Plugin 1.0.10 and earlier does not escape environment names on its Deployment Dashboard view, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with View/Configure permission.
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Analysis
by VulDB Data Team • 07/17/2022
The Jenkins Deployment Dashboard Plugin vulnerability represents a critical stored cross-site scripting flaw that emerged in versions 1.0.10 and earlier of the plugin. This vulnerability stems from inadequate input sanitization within the plugin's deployment dashboard view functionality, where environment names are not properly escaped before being rendered in the user interface. The flaw allows malicious actors with minimal privileges to execute arbitrary JavaScript code within the context of other users' browsers, creating a significant security risk for Jenkins environments that rely on this plugin for deployment tracking and monitoring.
The technical implementation of this vulnerability occurs when environment names containing malicious script code are stored within the Jenkins deployment dashboard configuration. When the dashboard view renders these environment names, the unescaped content is interpreted as executable JavaScript rather than plain text, enabling attackers to inject malicious payloads. This stored XSS vulnerability specifically affects the plugin's rendering mechanism, where user-provided environment identifiers are directly embedded into HTML output without proper HTML entity encoding or sanitization. The vulnerability is particularly concerning because it requires only View/Configure permissions, which are commonly granted to developers and administrators in many Jenkins installations, making exploitation relatively accessible.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to complete session hijacking, data exfiltration, and privilege escalation within the Jenkins environment. An attacker could craft malicious environment names containing JavaScript payloads that steal authentication cookies, redirect users to malicious sites, or inject additional malicious code into the Jenkins interface. The stored nature of this vulnerability means that once a malicious environment name is entered, it remains persistent and will affect all users who view the dashboard, potentially compromising multiple users over time. This vulnerability directly maps to CWE-79, which identifies cross-site scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 for initial access through malicious content.
Organizations utilizing the Jenkins Deployment Dashboard Plugin should immediately upgrade to version 1.0.11 or later, which contains the necessary patches to properly escape environment names in the dashboard view. System administrators should also implement additional security measures including regular security audits of plugin configurations, monitoring for unusual environment name entries, and implementing content security policies to limit the impact of potential XSS attacks. The vulnerability demonstrates the importance of proper input validation and output escaping in web applications, particularly in environments where users can configure system parameters that are subsequently rendered to other users. Organizations should also consider implementing additional security controls such as web application firewalls and regular security training for developers to prevent similar issues in other components of their Jenkins infrastructure.