What is the severity of CVE-2021-21621?

CVE-2021-21621 has a CVSS score that indicates a high severity due to potential exposure of user session IDs.

How do I fix CVE-2021-21621?

To fix CVE-2021-21621, upgrade the Jenkins Support Core Plugin to version 2.72.1 or later.

What versions are affected by CVE-2021-21621?

CVE-2021-21621 affects Jenkins Support Core Plugin versions 2.72 and earlier.

What type of vulnerability is CVE-2021-21621?

CVE-2021-21621 is a security vulnerability related to exposure of sensitive serialized user authentication information.

Who is impacted by CVE-2021-21621?

Users of Jenkins Support Core Plugin version 2.72 and earlier may be impacted by CVE-2021-21621.

Vulnerability/
CVE-2021-21621

medium

5.3

CWE

200 201

24/2/2021

24/5/2022

3/8/2024

CVE-2021-21621: Infoleak

First published: Wed Feb 24 2021(Updated: )

Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication details only)" information, which can include the session ID of the user creating the support bundle in some configurations.

Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com

Affected Software	Affected Version	How to fix
Jenkins Support Core	<=2.72
maven/org.jenkins-ci.plugins:support-core	<=2.72	2.72.1

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-21621?
CVE-2021-21621 has a CVSS score that indicates a high severity due to potential exposure of user session IDs.
How do I fix CVE-2021-21621?
To fix CVE-2021-21621, upgrade the Jenkins Support Core Plugin to version 2.72.1 or later.
What versions are affected by CVE-2021-21621?
CVE-2021-21621 affects Jenkins Support Core Plugin versions 2.72 and earlier.
What type of vulnerability is CVE-2021-21621?
CVE-2021-21621 is a security vulnerability related to exposure of sensitive serialized user authentication information.
Who is impacted by CVE-2021-21621?
Users of Jenkins Support Core Plugin version 2.72 and earlier may be impacted by CVE-2021-21621.

collector/nvd-index
collector/nvd-api
collector/github-advisory-latest
alias/GHSA-92pg-8g57-hqpx
alias/CVE-2021-21621
collector/nvd-cve
collector/github-advisory
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/severity
agent/author
agent/weakness
agent/references
agent/first-publish-date
agent/description
agent/event
agent/trending
agent/tags
agent/source
vendor/jenkins
canonical/jenkins support core
version/jenkins support core/2.72
package-manager/maven

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Frequently Asked Questions

What is the severity of CVE-2021-21621?
CVE-2021-21621 has a CVSS score that indicates a high severity due to potential exposure of user session IDs.
How do I fix CVE-2021-21621?
To fix CVE-2021-21621, upgrade the Jenkins Support Core Plugin to version 2.72.1 or later.
What versions are affected by CVE-2021-21621?
CVE-2021-21621 affects Jenkins Support Core Plugin versions 2.72 and earlier.
What type of vulnerability is CVE-2021-21621?
CVE-2021-21621 is a security vulnerability related to exposure of sensitive serialized user authentication information.
Who is impacted by CVE-2021-21621?
Users of Jenkins Support Core Plugin version 2.72 and earlier may be impacted by CVE-2021-21621.