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CVE-2021-22112: security - Vulnerability in Jenkins

Spring Security 5.4.x prior to 5.4.4, 5.3.x prior to 5.3.8.RELEASE, 5.2.x prior to 5.2.9.RELEASE, and older unsupported versions can fail to save the SecurityContext if it is changed more than once in a single request.A malicious user cannot cause the bug to happen (it must be programmed in). However, if the application’s intent is to only allow the user to run with elevated privileges in a small portion of the application, the bug can be leveraged to extend those privileges to the rest of the application.

3 years ago

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Date: Fri, 19 Feb 2021 15:59:09 +0100 From: Daniel Beck <ml@…kweb.net> To: oss-security@…ts.openwall.com Subject: Vulnerability in Jenkins

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:

* Jenkins 2.280

Summaries of the vulnerabilities are below. More details, severity, and attribution can be found here: https://www.jenkins.io/security/advisory/2021-02-19/

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-2195 / CVE-2021-22112 Spring Security 5.4.3 and earlier has a vulnerability that unintentionally persisted temporarily elevated privileges in some circumstances in a user’s session. This issue, CVE-2021-22112, is resolved in Spring Security 5.4.4.

Jenkins 2.266 through 2.279 (inclusive) include releases of Spring Security with this vulnerability.

We are aware of a sequence of operations in Jenkins 2.275 through 2.278 (inclusive) that allows attackers with Job/Workspace permission to exploit this to switch their identity to SYSTEM, an internal user with all permissions.

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

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