# Building Vulnerability Exception Tracking System

> 构建具有审批工作流、补偿控制文档和到期管理功能的漏洞例外与风险接受跟踪系统。

- Skill: `killvxk/building-vulnerability-exception-tracking-system` (Agent Skill, multi-file: 8 files)
- Install (CLI): `npx skillmds@latest add killvxk/building-vulnerability-exception-tracking-system`
- Raw SKILL.md: https://api.skillmd.com/api/skills/killvxk/building-vulnerability-exception-tracking-system/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: Apache-2.0
- Author: killvxk (https://skillmd.com/u/killvxk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/killvxk/building-vulnerability-exception-tracking-system

---


# 构建漏洞例外跟踪系统

## 概述

漏洞例外跟踪系统管理无法在 SLA 时间线内完成修复的漏洞情况。它提供结构化的工作流用于申请例外、记录补偿控制、获取风险接受批准，并在有效期结束时自动使例外失效。这确保组织在符合 PCI DSS、SOC 2 和 NIST CSF 等框架的同时，保持对已接受风险的可见性。

## 前置条件

- Python 3.9+，包含 `flask`、`sqlalchemy`、`requests`、`jinja2`
- PostgreSQL 或 SQLite 数据库
- 用于审批通知的邮件/Slack 集成
- 漏洞管理平台 API（DefectDojo、Qualys、Tenable）

## 例外申请工作流

### 例外类别

| 类别 | 描述 | 最长有效期 | 审批级别 |
|----------|------------|-------------|----------------|
| 修复延迟 | 补丁可用但部署受阻 | 30 天 | 团队负责人 + 安全团队 |
| 无可用修复 | 供应商尚未发布补丁 | 90 天 | 安全总监 |
| 业务关键 | 系统修补将导致停机 | 60 天 | VP 工程 + CISO |
| 误报 | 发现结果并非真实漏洞 | 永久 | 安全分析师 |
| 补偿控制 | 已部署替代缓解措施 | 180 天 | 安全架构师 |

### 例外申请必填字段

```python
exception_schema = {
    "cve_id": "CVE-2024-XXXX",
    "finding_id": "unique-finding-reference",
    "asset_hostname": "prod-db-01.corp.local",
    "severity": "high",
    "cvss_score": 8.1,
    "category": "remediation_delay",
    "justification": "数据库升级完成前无法应用补丁",
    "compensating_controls": [
        "已部署封锁利用模式的 WAF 规则",
        "网络分段仅允许受信任 VLAN 访问",
        "通过 Splunk 告警对利用指标进行增强监控"
    ],
    "requested_expiration": "2024-06-15",
    "requestor_email": "dbadmin@company.com",
    "approver_emails": ["security-lead@company.com", "ciso@company.com"],
    "risk_rating": "medium",
}
```

## 数据库模式

```sql
CREATE TABLE vulnerability_exceptions (
    id SERIAL PRIMARY KEY,
    cve_id VARCHAR(20) NOT NULL,
    finding_id VARCHAR(100) NOT NULL,
    asset_hostname VARCHAR(255),
    severity VARCHAR(20),
    cvss_score DECIMAL(3,1),
    category VARCHAR(50) NOT NULL,
    justification TEXT NOT NULL,
    compensating_controls TEXT,
    status VARCHAR(20) DEFAULT 'pending',
    requested_by VARCHAR(255) NOT NULL,
    approved_by VARCHAR(255),
    requested_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    approved_at TIMESTAMP,
    expires_at TIMESTAMP NOT NULL,
    expired BOOLEAN DEFAULT FALSE,
    risk_rating VARCHAR(20),
    review_notes TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE exception_audit_log (
    id SERIAL PRIMARY KEY,
    exception_id INTEGER REFERENCES vulnerability_exceptions(id),
    action VARCHAR(50) NOT NULL,
    actor VARCHAR(255) NOT NULL,
    details TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX idx_exception_status ON vulnerability_exceptions(status);
CREATE INDEX idx_exception_expires ON vulnerability_exceptions(expires_at);
CREATE INDEX idx_exception_cve ON vulnerability_exceptions(cve_id);
```

## 实施

### 例外申请 API

```python
from flask import Flask, request, jsonify
from datetime import datetime, timezone
import json

app = Flask(__name__)

@app.route("/api/exceptions", methods=["POST"])
def create_exception():
    data = request.json
    required = ["cve_id", "finding_id", "category", "justification", "expires_at", "requestor_email"]
    for field in required:
        if field not in data:
            return jsonify({"error": f"缺少必填字段：{field}"}), 400

    # 验证到期时间未超过类别最长有效期
    max_days = {"remediation_delay": 30, "no_fix": 90, "business_critical": 60,
                "false_positive": 365, "compensating_control": 180}
    # 插入数据库并通知审批人
    return jsonify({"status": "pending", "id": "exc-12345"})

@app.route("/api/exceptions/<exc_id>/approve", methods=["POST"])
def approve_exception(exc_id):
    approver = request.json.get("approver_email")
    notes = request.json.get("notes", "")
    # 更新状态为已批准，记录审批人和时间戳
    return jsonify({"status": "approved"})

@app.route("/api/exceptions/<exc_id>/reject", methods=["POST"])
def reject_exception(exc_id):
    reviewer = request.json.get("reviewer_email")
    reason = request.json.get("reason")
    # 更新状态为已拒绝，记录审核人和拒绝原因
    return jsonify({"status": "rejected"})
```

### 到期检查器（每日定时任务）

```bash
# 每日检查已过期的例外
python3 scripts/process.py --check-expirations

# 生成每月例外报告
python3 scripts/process.py --report --output exception_report.json
```

## 补偿控制文档

每项例外的补偿控制必须覆盖以下方面：
1. **检测**：如何检测利用尝试？
2. **预防**：哪些屏障降低了被利用的可能性？
3. **响应**：已准备哪些事件响应流程？
4. **监控**：哪些持续监控确保控制措施仍然有效？

## 参考资料

- [NIST SP 800-53 Rev 5 - CA-7 持续监控](https://csrc.nist.gov/publications/detail/sp/800-53/rev-5/final)
- [PCI DSS v4.0 补偿控制](https://docs-prv.pcisecuritystandards.org/PCI%20DSS/Standard/PCI-DSS-v4_0.pdf)
- [CIS Controls v8 - 控制 7.7](https://www.cisecurity.org/controls/continuous-vulnerability-management)