CVE-2020-8561
CVSS V2 Medium 4
CVSS V3 Medium 4.1
Description
A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.
Overview
- CVE ID
- CVE-2020-8561
- Assigner
- jordan@liggitt.net
- Vulnerability Status
- Analyzed
- Published Version
- 2021-09-20T17:15:08
- Last Modified Date
- 2021-11-06T03:04:43
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:kubernetes:kubernetes:1.20.11:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:kubernetes:kubernetes:1.21.5:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:kubernetes:kubernetes:1.22.2:-:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 4.1
- Base Severity
- MEDIUM
- Exploitability Score
- 2.3
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY | Mailing List Mitigation |
| https://github.com/kubernetes/kubernetes/issues/104720 | Mitigation Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20211014-0002/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-8561 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8561 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:48:04 | Added to TrackCVE | |||
| 2022-12-05 11:01:45 | security@kubernetes.io | jordan@liggitt.net | CVE Assigner | updated |
| 2022-12-05 11:01:45 | 2021-09-20T17:15Z | 2021-09-20T17:15:08 | CVE Published Date | updated |
| 2022-12-05 11:01:45 | 2021-11-06T03:04:43 | CVE Modified Date | updated | |
| 2022-12-05 11:01:45 | Analyzed | Vulnerability Status | updated |