CVE-2023-30532

Vulnerability

Overview

The Jenkins TurboScript Plugin versions 1.3 and earlier contain a missing permission check vulnerability. The plugin does not properly verify that a user has the necessary permissions (such as Item/Build) to trigger builds. As a result, any authenticated user with only Item/Read permission can initiate builds of jobs that correspond to a repository specified by the attacker [1][3].

Exploitation and

Attack Surface

An attacker can exploit this flaw by sending a crafted request to a Jenkins instance that has the vulnerable TurboScript Plugin installed. The attacker must have at least Item/Read access, which is a commonly granted low-level permission. No further authentication or special privileges are required beyond that. The attack can be performed remotely without any user interaction [1][2].

Impact

By triggering builds on arbitrary jobs, an attacker may cause unauthorized resource consumption, denial of service, or potentially leverage the build process to execute further malicious actions. The exact impact depends on the build configuration and the environment, but the unauthorized build trigger can compromise the integrity and availability of the CI/CD pipeline [1][3].

Mitigation

As of the Jenkins Security Advisory 2023-04-12, the vulnerability remains unresolved in the TurboScript Plugin. Users are advised to restrict Item/Read permissions to trusted users and monitor for any updates from the plugin maintainer. Since no patch has been released, administrators should consider disabling the plugin if it is not essential [1][2].