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Path Traversal in the Java Kubernetes Client

High severity GitHub Reviewed Published Jan 29, 2021 to the GitHub Advisory Database • Updated Jan 28, 2023

Package

maven io.kubernetes:client-java (Maven)

Affected versions

< 9.0.2
= 10.0.0

Patched versions

9.0.2
10.0.1

Description

Kubernetes Java client libraries in version 10.0.0 and versions prior to 9.0.1 allow writes to paths outside of the current directory when copying multiple files from a remote pod which sends a maliciously crafted archive. This can potentially overwrite any files on the system of the process executing the client code.

References

Published by the National Vulnerability Database Jan 21, 2021
Reviewed Jan 22, 2021
Published to the GitHub Advisory Database Jan 29, 2021
Last updated Jan 28, 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
None
User interaction
None
Scope
Unchanged
Confidentiality
None
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:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.425%
(75th percentile)

Weaknesses

CVE ID

CVE-2020-8570

GHSA ID

GHSA-cghx-9gcr-r42x

Source code

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