CVE-2021-4178: fabric8 kubernetes-client vulnerable
6.7
CVSS Score
3.1
Basic Information
CVE ID
GHSA ID
EPSS Score
0.21775%
CWE
Published
7/15/2022
Updated
5/22/2023
KEV Status
No
Technology
Java
JavaTechnical Details
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| io.fabric8:kubernetes-client | maven | >= 5.0.0-beta-1, < 5.0.3 | 5.0.3 |
| io.fabric8:kubernetes-client | maven | >= 5.1.0, < 5.1.2 | 5.1.2 |
| io.fabric8:kubernetes-client | maven | >= 5.2.0, < 5.3.2 | 5.3.2 |
| io.fabric8:kubernetes-client | maven | >= 5.5.0, < 5.7.4 | 5.7.4 |
| io.fabric8:kubernetes-client | maven | >= 5.8.0, < 5.8.1 | 5.8.1 |
| io.fabric8:kubernetes-client | maven | >= 5.9.0, < 5.10.2 | 5.10.2 |
| io.fabric8:kubernetes-client | maven | >= 5.11.0, < 5.11.2 | 5.11.2 |
Vulnerability Intelligence
Miggo AI
Miggo AIRoot Cause Analysis
The vulnerability stemmed from insecure YAML deserialization using SnakeYAML's default constructor. The patch explicitly adds SafeConstructor to restrict deserialization to standard Java types. The unmarshalYaml() function directly handles YAML input parsing and was the locus of the unsafe deserialization. The CWEs (94/502) and commit diff both confirm this was the attack vector.