Analyzing Kubernetes Audit Logs

分析 Kubernetes 审计日志

说明

解析 Kubernetes 审计日志文件（JSON lines 格式），检测安全相关事件， 包括未授权访问、权限提升（privilege escalation）和数据外泄（exfiltration）。

import json

with open("/var/log/kubernetes/audit.log") as f:
    for line in f:
        event = json.loads(line)
        verb = event.get("verb")
        resource = event.get("objectRef", {}).get("resource")
        user = event.get("user", {}).get("username")
        if verb == "create" and resource == "pods/exec":
            print(f"Pod exec by {user}")

需检测的关键事件：

1. pods/exec 和 pods/attach（进入容器 shell）
2. secrets 访问（get/list/watch）
3. clusterrolebindings 创建（RBAC 权限提升）
4. 特权 Pod 创建
5. 匿名或 system:unauthenticated 访问

示例

# 检测 secret 枚举
if verb in ("get", "list") and resource == "secrets":
    print(f"Secret access: {user} -> {event['objectRef'].get('name')}")

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: killvxk
• Source: killvxk/cybersecurity-skills-zh
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.