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Sandbox bypass vulnerability in Jenkins Pipeline: Deprecated Groovy Libraries Plugin

High severity GitHub Reviewed Published Oct 19, 2022 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven io.jenkins.plugins:pipeline-groovy-lib (Maven)

Affected versions

<= 612.v84da

Patched versions

613.v9c41a_160233f
maven org.jenkins-ci.plugins.workflow:workflow-cps-global-lib (Maven)
< 588.v576c103a
588.v576c103a_ff86

Description

Pipeline: Groovy Libraries Plugin and older releases of the Pipeline: Deprecated Groovy Libraries Plugin (formerly Pipeline: Shared Groovy Libraries Plugin) define the library Pipeline step, which allows Pipeline authors to dynamically load Pipeline libraries. The return value of this step can be used to instantiate classes defined in the loaded library.

In Pipeline: Groovy Libraries Plugin 612.v84da_9c54906d and earlier and in Pipeline: Deprecated Groovy Libraries Plugin 583.vf3b_454e43966 and earlier, the library step can be used to invoke sandbox-generated synthetic constructors in crafted untrusted libraries and construct any subclassable type. This is similar to SECURITY-582 in the 2017-08-07 security advisory, but in a different plugin.

This vulnerability allows attackers with permission to define untrusted Pipeline libraries and to define and run sandboxed Pipelines, to bypass the sandbox protection and execute arbitrary code in the context of the Jenkins controller JVM.

Pipeline: Groovy Libraries Plugin 613.v9c41a_160233f rejects improper calls to sandbox-generated synthetic constructors when using the library step.

Pipeline: Deprecated Groovy Libraries Plugin 588.v576c103a_ff86 no longer contains the library step. It has been moved into the Pipeline: Groovy Libraries Plugin.

References

Published by the National Vulnerability Database Oct 19, 2022
Published to the GitHub Advisory Database Oct 19, 2022
Reviewed Oct 19, 2022
Last updated Feb 1, 2023

Severity

High

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
Low
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:L/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.124%
(48th percentile)

Weaknesses

CVE ID

CVE-2022-43406

GHSA ID

GHSA-7qw2-h9gj-hcvh

Source code

No known source code

Credits

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