Date: Thu, 18 Mar 2021 14:28:59 +0100 From: Daniel Beck <ml@...kweb.net> To: oss-security@...ts.openwall.com Subject: Multiple vulnerabilities in Jenkins plugins Jenkins is an open source automation server which enables developers around the world to reliably build, test, and deploy their software. The following releases contain fixes for security vulnerabilities: * CloudBees AWS Credentials Plugin 1.28.1 * Libvirt Agents Plugin 1.9.1 * Matrix Authorization Strategy Plugin 2.6.6 * Role-based Authorization Strategy Plugin 3.1.1 * Warnings Next Generation Plugin 8.5.0 Summaries of the vulnerabilities are below. More details, severity, and attribution can be found here: https://www.jenkins.io/security/advisory/2021-03-18/ We provide advance notification for security updates on this mailing list: https://groups.google.com/d/forum/jenkinsci-advisories If you discover security vulnerabilities in Jenkins, please report them as described here: https://www.jenkins.io/security/#reporting-vulnerabilities --- SECURITY-2180 / CVE-2021-21623 Items (like jobs) can be organized hierarchically in Jenkins, using the Folders Plugin or something similar. An item is expected to be accessible only if all its ancestors are accessible as well. Matrix Authorization Strategy Plugin 2.6.5 and earlier does not correctly perform permission checks to determine whether an item should be accessible. This allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders. SECURITY-2182 / CVE-2021-21624 Items (like jobs) can be organized hierarchically in Jenkins, using the Folders Plugin or something similar. An item is expected to be accessible only if all its ancestors are accessible as well. Role-based Authorization Strategy Plugin 3.1 and earlier does not correctly perform permission checks to determine whether an item should be accessible. This allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders. SECURITY-2032 / CVE-2021-21625 CloudBees AWS Credentials Plugin 1.28 and earlier does not perform a permission check in a helper method for HTTP endpoints. This allows attackers with Overall/Read permission to enumerate credentials IDs of AWS credentials stored in Jenkins if any of the following plugins are installed: * Amazon Elastic Container Service (ECS) / Fargate * AWS Parameter Store Build Wrapper * AWS SAM Further plugins may use this helper method as well without performing a permission check themselves. Credentials IDs obtained this way can be used as part of an attack to capture the credentials using another vulnerability. SECURITY-2041 / CVE-2021-21626 Warnings Next Generation Plugin 8.4.4 and earlier does not perform permission checks in methods implementing form validation. This allows attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents. A sequence of requests can be used to effectively list workspace contents. SECURITY-1764 / CVE-2021-21627 Libvirt Agents Plugin 1.9.0 and earlier does not require POST requests for a form submission endpoint, resulting in a cross-site request forgery (CSRF) vulnerability. This vulnerability allows attackers to stop hypervisor domains.
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