CVE-2022-30946 in Script Security Plugin
Summary
by MITRE • 05/17/2022
A cross-site request forgery (CSRF) vulnerability in Jenkins Script Security Plugin 1158.v7c1b_73a_69a_08 and earlier allows attackers to have Jenkins send an HTTP request to an attacker-specified webserver.
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Analysis
by VulDB Data Team • 05/25/2022
The cross-site request forgery vulnerability identified as CVE-2022-30946 affects the Jenkins Script Security Plugin version 1158.v7c1b_73a_69a_08 and earlier releases, representing a critical security flaw that undermines the integrity of web application requests within the Jenkins environment. This vulnerability resides in the plugin's handling of HTTP requests and demonstrates how insufficient validation mechanisms can be exploited to manipulate authenticated sessions. The flaw allows attackers to craft malicious requests that can be executed on behalf of authenticated users, potentially leading to unauthorized actions within the Jenkins infrastructure.
The technical implementation of this CSRF vulnerability stems from the plugin's failure to properly validate the origin of HTTP requests, particularly when processing script security configurations. Attackers can leverage this weakness by crafting malicious web pages or exploiting existing user sessions to force Jenkins to execute unintended HTTP requests against attacker-controlled servers. This occurs because the plugin does not adequately verify that requests originate from legitimate sources within the Jenkins environment, creating an opening for session hijacking and unauthorized command execution. The vulnerability specifically affects the plugin's handling of cross-domain requests without proper anti-CSRF token validation, making it particularly dangerous in environments where Jenkins is accessed by multiple users with varying privilege levels.
The operational impact of this vulnerability extends beyond simple request manipulation, as it provides attackers with the capability to perform actions that could compromise entire Jenkins installations. An attacker could potentially exploit this flaw to execute arbitrary code, access sensitive configuration data, or manipulate build processes within Jenkins. The vulnerability's severity is amplified by the fact that it affects a widely used security plugin, meaning that many Jenkins installations could be vulnerable without proper patching. Organizations relying on Jenkins for continuous integration and deployment pipelines face significant risk of unauthorized access to their build environments and potential compromise of source code repositories and deployment configurations.
Mitigation strategies for CVE-2022-30946 require immediate patching of the Script Security Plugin to version 1158.v7c1b_73a_69a_08 or later, which addresses the CSRF validation issues through proper request origin verification. Organizations should also implement additional security measures including mandatory CSRF token validation for all web requests, enhanced session management protocols, and regular security auditing of Jenkins plugin configurations. Network segmentation and firewall rules can help limit the impact of potential exploitation by restricting access to Jenkins from untrusted networks. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses, and corresponds to ATT&CK technique T1566.001 for initial access through spearphishing attachments, as attackers may use CSRF attacks to establish persistence or escalate privileges within Jenkins environments. Security teams should also consider implementing web application firewalls and monitoring for suspicious HTTP request patterns that could indicate CSRF attack attempts.