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Jenkins Google Compute Engine Plugin does not verify SSH host keys when connecting agents created by the plugin

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 31, 2023

Package

maven org.jenkins-ci.plugins:google-compute-engine (Maven)

Affected versions

<= 4.1.1

Patched versions

4.2.0

Description

Jenkins Google Compute Engine Plugin 4.1.1 and earlier does not verify SSH host keys when connecting agents created by the plugin, enabling man-in-the-middle attacks. Google Compute Engine Plugin 4.2.0 verifies SSH host keys before executing any commands on agents.

References

Published by the National Vulnerability Database Nov 21, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Dec 6, 2022
Last updated Jan 31, 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:3.0/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-2019-16546

GHSA ID

GHSA-345p-pw5q-g98v

Source code

No known source code
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