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Sandbox escape in Jenkins Email Extension Plugin

Critical severity GitHub Reviewed Published Feb 15, 2023 to the GitHub Advisory Database • Updated Jan 4, 2024

Package

maven org.jenkins-ci.plugins:email-ext (Maven)

Affected versions

<= 2.93

Patched versions

2.94

Description

In Jenkins Email Extension Plugin 2.93 and earlier, templates defined inside a folder were not subject to Script Security protection, allowing attackers able to define email templates in folders to bypass the sandbox protection and execute arbitrary code in the context of the Jenkins controller JVM.

References

Published by the National Vulnerability Database Feb 15, 2023
Published to the GitHub Advisory Database Feb 15, 2023
Reviewed Feb 15, 2023
Last updated Jan 4, 2024

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
Low
User interaction
None
Scope
Changed
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:C/C:H/I:H/A:H

EPSS score

0.112%
(45th percentile)

Weaknesses

CVE ID

CVE-2023-25765

GHSA ID

GHSA-c9c2-wcxh-3w5j

Source code

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