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Jenkins CAS Plugin Server-Side Request Forgery vulnerability

Moderate severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Dec 6, 2023

Package

maven org.jenkins-ci.plugins:cas-plugin (Maven)

Affected versions

<= 1.4.1

Patched versions

1.4.2

Description

A server-side request forgery vulnerability exists in Jenkins CAS Plugin 1.4.1 and older in CasSecurityRealm.java that allows attackers with Overall/Read access to cause Jenkins to send a GET request to a specified URL. Additionally, this form validation method did not require POST requests, resulting in a CSRF vulnerability. As of version 1.4.2, this form validation method requires POST requests and the Overall/Administer permission.

References

Published by the National Vulnerability Database Jun 5, 2018
Published to the GitHub Advisory Database May 14, 2022
Reviewed Dec 12, 2022
Last updated Dec 6, 2023

Severity

Moderate

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
Low
Integrity
Low
Availability
None

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:N/S:U/C:L/I:L/A:N

EPSS score

0.054%
(23rd percentile)

Weaknesses

CVE ID

CVE-2018-1000188

GHSA ID

GHSA-f8r7-7hv9-7f43

Source code

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