威胁情报与漏洞管理
学习如何跟踪漏洞，结合 CVSS 和威胁情报确定优先级，并在 DevSecOps 数据管道中持续运行修复生命周期。
威胁情报与漏洞管理 是 CoddyKit 上的免费 Secure Coding & OWASP Top 10 for Backend 课时。 这是第 4 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Secure Coding & OWASP Top 10 for Backend 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Secure Coding & OWASP Top 10 for Backend 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Why Vulnerability Management?
New vulnerabilities appear daily. Vulnerability management is the ongoing process of discovering, prioritizing, and remediating weaknesses before attackers exploit them. It is a continuous loop, not a one-time scan.
The Management Lifecycle
The lifecycle has clear stages:
- Discover: find vulnerabilities via scans and feeds
- Prioritize: rank by risk
- Remediate: patch, mitigate, or accept
- Verify: confirm the fix
- Report: track metrics over time
CVE and CVSS
A CVE is a unique identifier for a known vulnerability. CVSS is a 0-10 score describing severity based on factors like attack vector and impact. CVSS gives a baseline, but it is not the whole story.
Reading a CVSS Score
CVSS bands roughly map to urgency. Use them to triage, but always combine with context.
def severity(score):
if score >= 9.0:
return 'Critical'
if score >= 7.0:
return 'High'
if score >= 4.0:
return 'Medium'
if score > 0.0:
return 'Low'
return 'None'
for s in [9.8, 7.5, 4.3, 2.1]:
print(s, severity(s))Threat Intelligence
Threat intelligence adds real-world context: Is this CVE being actively exploited? Is there public exploit code? Feeds like CISA KEV and EPSS help you focus on what attackers are actually using right now.
Risk-Based Prioritization
Severity alone is misleading. A medium-CVSS bug under active exploitation on an internet-facing system may outrank a critical bug on an isolated internal tool. Combine severity, exploitability, and asset exposure.
def priority(cvss, exploited, internet_facing):
score = cvss
if exploited:
score += 3
if internet_facing:
score += 2
return round(min(score, 15), 1)
print(priority(5.0, True, True)) # medium CVE but urgent
print(priority(9.0, False, False)) # critical but isolatedSoftware Bill of Materials
An SBOM lists every component and version in your software. When a new CVE drops, an SBOM lets you instantly answer: are we affected, and where?
Integrating into CI/CD
In DevSecOps, vulnerability scanning runs automatically on every build: dependency scanning, container image scanning, and IaC scanning. Builds can fail when a new critical issue is found, shifting detection left.
Remediation Options
Remediation is not always a patch. Your options are:
- Patch or upgrade the component
- Mitigate with a workaround or compensating control
- Accept the risk formally if impact is low
Track each decision with an owner and a deadline.
SLAs and Metrics
Define remediation SLAs by severity (for example, critical within days, high within weeks). Track metrics like mean time to remediate so the program improves measurably over time.
Feeding Incident Response
Vulnerability data and threat intel inform incident response: knowing which CVEs are exploited helps responders recognize attacks faster and patch the right systems first during an incident.
Quick Check
Test your understanding of vulnerability management.
Recap
You learned the vulnerability management lifecycle, how to read CVSS, and how threat intelligence and SBOMs enable risk-based prioritization. Integrating scanning into CI/CD, setting remediation SLAs, and feeding incident response close the loop in a mature DevSecOps program.
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常见问题解答
「威胁情报与漏洞管理」课时是免费的吗？
是的 — 「威胁情报与漏洞管理」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Secure Coding & OWASP Top 10 for Backend 课程的其余内容，请升级到 CoddyKit PRO。 Secure Coding & OWASP Top 10 for Backend 课程共包含 4 节课。
「威胁情报与漏洞管理」这节课中我会学到什么？
学习如何跟踪漏洞，结合 CVSS 和威胁情报确定优先级，并在 DevSecOps 数据管道中持续运行修复生命周期。 你通过在浏览器中直接运行的动手代码来练习 Secure Coding & OWASP Top 10 for Backend，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Secure Coding & OWASP Top 10 for Backend 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Secure Coding & OWASP Top 10 for Backend 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 4 节课，共 4 节。
「威胁情报与漏洞管理」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Secure Coding & OWASP Top 10 for Backend 课中编写并运行代码吗？
能。每节 Secure Coding & OWASP Top 10 for Backend 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。