Overview
- Description
- A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.
- Source
- jordan@liggitt.net
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 5.2
- Exploitability score
- 1.2
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 5.5
- Impact score
- 4.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:N/I:P/A:P
Weaknesses
- nvd@nist.gov
- NVD-CWE-Other
- jordan@liggitt.net
- CWE-372
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2CBC03B5-FF1D-45D7-A8F9-288DF2057568",
"versionEndExcluding": "1.18.18"
},
{
"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "54F99BEF-703E-43C0-846C-AB9EECE134A9",
"versionEndExcluding": "1.19.10",
"versionStartIncluding": "1.19.0"
},
{
"criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E26E82C1-754C-4E81-B7BC-FB4DACE33945",
"versionEndExcluding": "1.20.6",
"versionStartIncluding": "1.20.0"
}
],
"operator": "OR"
}
]
}
]