CVE-2020-8566— Ceph RBD adminSecrets exposed in logs when loglevel >= 4
Quick assessment
Affected
Kubernetes Kubernetes
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 Kubernetes存在日志信息泄露漏洞，攻击者可利用该漏洞绕过对数据的访问限制，以获取敏感信息。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2020-8566
Vulnerability Information
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Vulnerability Title
Ceph RBD adminSecrets exposed in logs when loglevel >= 4
Source: CVE Program / CVE List V5
Vulnerability Description
In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. This affects < v1.19.3, < v1.18.10, < v1.17.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Kubernetes 日志日志信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 Kubernetes存在日志信息泄露漏洞，攻击者可利用该漏洞绕过对数据的访问限制，以获取敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Kubernetes | Kubernetes | < 1.19.3 | - |
|
II. Public POCs for CVE-2020-8566
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-8566 (1)
-
https://security.netapp.com/advisory/ntap-20210122-0006/ x_refsource_CONFIRM
Other References for CVE-2020-8566 (2)
-
https://github.com/kubernetes/kubernetes/issues/95624 x_refsource_CONFIRM
-
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJ mailing-list x_refsource_MLIST
Same Patch Batch · Kubernetes · 2020-12-07 · 4 CVEs total
| CVE-2020-8565 | 4.7 MEDIUM | Incomplete fix for CVE-2019-11250 allows for token leak in logs when logLevel >= 9 |
| CVE-2020-8564 | 4.7 MEDIUM | Docker config secrets leaked when file is malformed and loglevel >= 4 |
| CVE-2020-8563 | 4.7 MEDIUM | Secret leaks in logs for vSphere Provider kube-controller-manager |
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V. Comments for CVE-2020-8566
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