CVE-2018-1002105 PoC — Google Kubernetes 权限许可和访问控制漏洞

Source

https://github.com/bgeesaman/cve-2018-1002105

Associated Vulnerability

Title: Google Kubernetes 权限许可和访问控制漏洞 (CVE-2018-1002105)
Description:In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.

Description

PoC command injection example for cve-2018-1002105 based off https://github.com/gravitational/cve-2018-1002105

Readme

# This was modified from https://gravitational.com/blog/kubernetes-websocket-upgrade-security-vulnerability/.  All credit goes to the kind folks at Gravitational.

The original PoC code was modified to go a bit beyond checking for vulnerability and to actually run a command inside the first container in the first namespace.  In this case, `curl -s google.com` inside the first pod/container in the default namespace on most clusters.  From here, it's easy to make an actual tool to extract secrets, code, exfil data, etc.

# CVE-2018-1002105

File Snapshot

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