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Link Following in Kata Runtime

High severity GitHub Reviewed Published Feb 15, 2022 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

gomod github.com/kata-containers/runtime (Go)

Affected versions

<= 1.9
>= 1.10.0, <= 1.10.5
= 1.11.0

Patched versions

1.9.1
1.10.6
1.11.1

Description

A malicious guest compromised before a container creation (e.g. a malicious guest image or a guest running multiple containers) can trick the kata runtime into mounting the untrusted container filesystem on any host path, potentially allowing for code execution on the host. This issue affects Kata Containers 1.11 versions earlier than 1.11.1; Kata Containers 1.10 versions earlier than 1.10.5; Kata Containers 1.9 and earlier versions.

References

Published by the National Vulnerability Database Jun 10, 2020
Reviewed May 13, 2021
Published to the GitHub Advisory Database Feb 15, 2022
Last updated Feb 1, 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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
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:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS score

0.054%
(23rd percentile)

Weaknesses

CVE ID

CVE-2020-2026

GHSA ID

GHSA-877x-32pm-p28x

Source code

No known source code
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