CVE-2022-29044 in Node and Label Parameter Plugin
Summary
by MITRE • 04/13/2022
Jenkins Node and Label parameter Plugin 1.10.3 and earlier does not escape the name and description of Node and Label parameters on views displaying parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
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Analysis
by VulDB Data Team • 04/19/2022
The vulnerability identified as CVE-2022-29044 affects the Jenkins Node and Label parameter Plugin version 1.10.3 and earlier, presenting a critical stored cross-site scripting flaw that compromises the security integrity of Jenkins environments. This vulnerability stems from insufficient input sanitization within the plugin's parameter display mechanisms, specifically failing to properly escape the name and description fields of Node and Label parameters when rendered in web views. The flaw exists in the plugin's user interface rendering logic where user-supplied data is directly embedded into HTML output without appropriate HTML entity encoding or sanitization measures.
The technical exploitation of this vulnerability requires an attacker to possess the Item/Configure permission within Jenkins, which typically allows users to modify job configurations and parameter settings. Once this permission level is achieved, an attacker can craft malicious input containing script payloads within the Node or Label parameter name and description fields. When other users view these parameters through the Jenkins interface, the malicious scripts execute in their browsers within the context of the Jenkins session, potentially leading to full session hijacking, privilege escalation, or data exfiltration. The stored nature of this XSS vulnerability means that the malicious payload persists in the Jenkins configuration and executes every time the affected parameters are displayed, making it particularly dangerous for long-term exploitation.
This vulnerability directly maps to CWE-79: Improper Neutralization of Input During Web Page Generation, which classifies the flaw as a web application security weakness involving the improper handling of user-provided data in web contexts. The vulnerability also aligns with ATT&CK technique T1566.001: Phishing, as it enables attackers to craft malicious parameter entries that can be used in social engineering campaigns to deliver malicious payloads to unsuspecting users. The impact extends beyond simple script execution as it can enable attackers to manipulate the Jenkins environment's user interface, potentially redirecting users to malicious sites or stealing authentication tokens from the victim's browser session.
Organizations running affected Jenkins versions should immediately upgrade to plugin versions that address this vulnerability, typically those released after the patching timeline for CVE-2022-29044. The mitigation strategy involves implementing proper input validation and output encoding mechanisms within the plugin's rendering pipeline, ensuring that all user-provided content is sanitized before being displayed in web contexts. Additionally, organizations should consider implementing network-level protections such as content security policies to limit the impact of potential exploitation, and establish regular security auditing procedures to identify and remediate similar vulnerabilities in other Jenkins plugins and components. Security teams should also review and restrict permissions for Item/Configure access to minimize the attack surface, ensuring that only trusted administrators can modify parameter configurations that might be exploited through this vector.