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Missing SSH host key validation in Mac Plugin

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Dec 13, 2023

Package

maven fr.edf.jenkins.plugins:mac (Maven)

Affected versions

< 1.2.0

Patched versions

1.2.0

Description

Mac Plugin 1.1.0 and earlier does not use SSH host key validation when connecting to Mac Cloud host launched by the plugin. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections to build agents.

Mac Plugin 1.2.0 validates SSH host keys when connecting to agents.

References

Published by the National Vulnerability Database Mar 9, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jan 14, 2023
Last updated Dec 13, 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
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
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:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS score

0.128%
(49th percentile)

Weaknesses

CVE ID

CVE-2020-2146

GHSA ID

GHSA-rv9g-67f7-grq7

Source code

Credits

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