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Jenkins Plugin Installation Manager Tool did not verify plugin downloads

Critical severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Oct 27, 2023

Package

maven io.jenkins.plugin-management:plugin-management-parent-pom (Maven)

Affected versions

< 2.2.0

Patched versions

2.2.0

Description

Jenkins Plugin Installation Manager Tool is part of the Jenkins project Docker images. As jenkins-plugin-cli it is used to download and install plugins even before Jenkins is running.

Jenkins Plugin Installation Manager Tool 2.1.3 and earlier does not verify plugin downloads. This may allow third parties such as mirror operators to provide crafted plugin downloads.

Jenkins Plugin Installation Manager Tool 2.2.0 confirms that actual checksums of downloaded plugin match the expected checksums.

Docker images of Jenkins 2.269 and 2.263.1 contain Plugin Installation Manager Tool 2.2.0. Users of older Docker images can change the version they use by extending the Jenkins image and update the tool themselves with:

ARG PLUGIN_CLI_URL=https://github.com/jenkinsci/plugin-installation-manager-tool/releases/download/2.2.0/jenkins-plugin-manager-2.2.0.jar
RUN curl -fsSL ${PLUGIN_CLI_URL} -o /usr/lib/jenkins-plugin-manager.jar
Jenkinsfile Runner 1.0-beta-22 Docker images also include Plugin Installation Manager Tool 2.2.0.

References

Published by the National Vulnerability Database Dec 3, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Sep 7, 2022
Last updated Oct 27, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.244%
(65th percentile)

Weaknesses

CVE ID

CVE-2020-2320

GHSA ID

GHSA-m8r4-c7jm-w782

Source code

Credits

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