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Jenkins Cross-Site Scripting vulnerability in help icons

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Dec 22, 2023

Package

maven org.jenkins-ci.main:jenkins-core (Maven)

Affected versions

<= 2.235.3
>= 2.236, <= 2.251

Patched versions

2.235.4
2.252

Description

Jenkins 2.251 and earlier, LTS 2.235.3 and earlier does not escape the tooltip content of help icons. Tooltip values can be contributed by plugins, some of which use user-specified values.
This results in a stored cross-site scripting (XSS) vulnerability.
Jenkins 2.252, LTS 2.235.4 escapes the tooltip content of help icons.

References

Published by the National Vulnerability Database Aug 12, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jun 23, 2022
Last updated Dec 22, 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
Required
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:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS score

0.718%
(81st percentile)

Weaknesses

CVE ID

CVE-2020-2229

GHSA ID

GHSA-hvmc-7g2x-r3p9

Source code

Credits

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