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CVE-2019-1002101— kubectl cp path traversal

Quick assessment

Affected
Kubernetes Kubernetes
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

kubectl是一款用于运行针对Kubernetes集群的命令的命令行程序。 kubectl中存在后置链接漏洞，该漏洞源于网络系统或产品未能正确地过滤资源或文件路径中的特殊元素。攻击者可利用该漏洞访问受限目录之外的位置。以下版本受到影响：kubectl 1.11.9版本，1.12.7版本，1.13.5版本，1.14.0版本。

AI Predicted 7.8 Difficulty: Easy EPSS 12.80% · P96

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell
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I. Basic Information for CVE-2019-1002101

Vulnerability Information
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Vulnerability Title
kubectl cp path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
kubectl 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kubectl是一款用于运行针对Kubernetes集群的命令的命令行程序。 kubectl中存在后置链接漏洞，该漏洞源于网络系统或产品未能正确地过滤资源或文件路径中的特殊元素。攻击者可利用该漏洞访问受限目录之外的位置。以下版本受到影响：kubectl 1.11.9版本，1.12.7版本，1.13.5版本，1.14.0版本。
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 1.1-1.10 -

II. Public POCs for CVE-2019-1002101

# POC Description Source Link Shenlong Link
1 PoC helper scripts and Dockerfile for CVE-2019-1002101 https://github.com/brompwnie/CVE-2019-1002101-Helpers POC Details
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III. Intelligence Information for CVE-2019-1002101

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Patches & Fixes for CVE-2019-1002101 (1)

Vendor Advisories for CVE-2019-1002101 (4)

Mailing List Discussions for CVE-2019-1002101 (3)

Other References for CVE-2019-1002101 (1)

IV. Related Vulnerabilities

Same product: Kubernetes
Same vendor: Kubernetes

V. Comments for CVE-2019-1002101

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