Application Security

什么是网络安全中的SSDLC?

SSDLC(安全软件开发生命周期)是传统SDLC的扩展,将安全实践嵌入到软件开发的每个阶段——设计、编码、测试、部署和维护。其目标是及早识别和解决漏洞,减少昂贵的修复,并确保更安全的应用程序。

什么是网络安全中的SSDLC?

SSDLC代表安全软件开发生命周期(Secure Software Development Life Cycle)。它类似于传统软件开发生命周期(SDLC)的扩展。

SSDLC方法不是在发布前的最后一步才考虑安全性,而是在SDLC的每个阶段中嵌入安全性,从设计、编码、测试到部署和维护。其目标是及早解决漏洞问题,减少未来昂贵修复的风险,并提高应用程序的安全性。

SSDLC的关键实践

  • 威胁建模 - 从设计阶段识别威胁
  • 安全编码 - 遵循安全编码标准以防止漏洞
  • 自动化安全测试 - 在开发过程中使用安全工具如SCA、SAST、DAST
  • 代码审查和渗透测试 - 将手动验证与自动化安全扫描结合
  • 持续监控 - 在生产中维护安全性

SSDLC与SDLC的比较

两者在软件开发中都很有用,但范围不同:

方面SDLCSSDLC
重点软件的功能、性能和交付。安全性与功能和性能并行集成。
安全角色通常在周期后期考虑(例如,发布前测试)。从设计到维护的所有阶段中嵌入安全性。
结果软件可以运行,但可能需要在发布后修补。软件默认设计为安全,减少漏洞。

简而言之, SDLC 是关于构建软件,而 SSDLC 是关于构建安全软件

相关术语

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VALIDATED FINDING Evidence attached

Server-Side Request Forgery in webhooks/receiver

demo-project/sample-app · src/webhooks/receiver.py:42

SeverityHigh CVSS 3.18.6 Priority79 Confirmedvia replay

Untrusted caller-supplied URLs reach an internal egress without an allowlist. Replayed in a sandbox against a fresh authorised target — the same control was validated to fail twice.

REVIEWER-READY REMEDIATION Merge-ready PR

Validate the target URL against an allowlist of permitted hostnames. Reject private/internal IP ranges. Enforce HTTPS only.

plexicus/remediation/webhooks-ssrf 3 changed · 0 new files
42resp = requests.get(target_url)
42+if not is_allowed_host(target_url):
43+  raise WebhookRejected(target_url)
44+resp = requests.get(target_url, timeout=5)
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