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CVE-2020-8568— Kubernetes Secrets Store CSI Driver sync/rotate directory traversal

Quick assessment

Affected
Kubernetes Kubernetes Secrets Store CSI Driver
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 SIGs Secrets-store-csi-driver是Kubernetes SIGs组织的一个基于CSI卷用于存储机密文件的K8s组件。 Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16 存在安全漏洞，攻击者可利用该漏洞修改SecretProviderClassPodStatus状态资源，能够向主机文件系统写入内容。

CVSS 5.8 · Medium EPSS 1.31% · P70

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials
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I. Basic Information for CVE-2020-8568

Vulnerability Information
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Vulnerability Title
Kubernetes Secrets Store CSI Driver sync/rotate directory traversal
Source: CVE Program / CVE List V5
Vulnerability Description
Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16 allow an attacker who can modify a SecretProviderClassPodStatus/Status resource the ability to write content to the host filesystem and sync file contents to Kubernetes Secrets. This includes paths under var/lib/kubelet/pods that contain other Kubernetes Secrets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
路径遍历：’../filedir’
Source: CVE Program / CVE List V5
Vulnerability Title
Kubernetes SIGs Secrets-store-csi-driver 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes SIGs Secrets-store-csi-driver是Kubernetes SIGs组织的一个基于CSI卷用于存储机密文件的K8s组件。 Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16 存在安全漏洞，攻击者可利用该漏洞修改SecretProviderClassPodStatus状态资源，能够向主机文件系统写入内容。
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 Secrets Store CSI Driver Kubernetes Secrets Store CSI Driver v0.0.15 -

II. Public POCs for CVE-2020-8568

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III. Intelligence Information for CVE-2020-8568

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Other References for CVE-2020-8568 (2)

Same Patch Batch · Kubernetes · 2021-01-21 · 5 CVEs total

CVE-2020-8554 6.3 MEDIUM Kubernetes man in the middle using LoadBalancer or ExternalIPs
CVE-2020-8567 4.9 MEDIUM Kubernetes Secrets Store CSI Driver plugin directory traversals
CVE-2020-8569 4.3 MEDIUM Kubernetes CSI snapshot-controller DoS
CVE-2020-8570 Kubernetes Java client libraries unvalidated path traversal in Copy implementation

IV. Related Vulnerabilities

Same product: Kubernetes Secrets Store CSI Driver
Same vendor: Kubernetes
Same weakness: CWE-24

V. Comments for CVE-2020-8568

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