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List:       oss-security
Subject:    [oss-security] Vulnerability in Jenkins
From:       Daniel Beck <ml () beckweb ! net>
Date:       2021-04-20 17:53:53
Message-ID: 58F4A3F7-04B6-4CF1-B422-D8403105F09F () beckweb ! net
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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 2.286
* Jenkins LTS 2.277.3

Summaries of the vulnerabilities are below. More details, severity, and
attribution can be found here:
https://www.jenkins.io/security/advisory/2021-04-20/

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

---

JENKINS-65280 / CVE-2021-28165
Jenkins bundles Winstone-Jetty, a wrapper around Jetty, to act as HTTP and
servlet server when started using `java -jar jenkins.war`. This is how
Jenkins is run when using any of the installers or packages, but not when
run using servlet containers such as Tomcat.

Jenkins 2.285 and earlier, LTS 2.277.2 and earlier bundles Jetty 9.4.38 or
earlier with multiple security vulnerabilities, including CVE-2021-28165.
This vulnerability may allow unauthenticated attackers to cause a denial of
service if Winstone-Jetty is configured to handle SSL/TLS connections.

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