Cloudflare WAF 2026-10-06：修复 BIG-IP 堆溢出漏洞并收紧命令注入防护
WAF - WAF Release - 2026-10-06
推荐理由
本次更新包含针对高危 CVE 的安全加固及命令注入防护升级，直接影响依赖 Cloudflare WAF 保护的应用安全性，建议立即确认相关规则已生效。
This release introduces a new detection to mitigate a heap-based buffer overflow vulnerability in F5 BIG-IP, and enhances existing command injection protections by incorporating tested beta logic into the baseline rule.
本次更新引入了一项新检测机制，以缓解 F5 BIG-IP 中的基于堆的缓冲区溢出漏洞，并通过将经过测试的 Beta 逻辑整合到基线规则中，增强了现有的命令注入防护能力。
Key Findings
关键发现
- CVE-2026-94127: A heap-based buffer overflow vulnerability in F5 BIG-IP. Attackers can exploit this flaw to execute arbitrary code on the affected system.
- CVE-2026-94127：F5 BIG-IP 中存在基于堆的缓冲区溢出漏洞。攻击者可利用此缺陷在受影响系统上执行任意代码。
| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
|---|---|---|---|---|---|---|
| Cloudflare Managed Ruleset | ...a056caff | N/A | Command Injection - Generic 8 - uri - Beta | Log | Block | This rule is merged into the original rule "Command Injection - Generic 8 - uri" (ID: ...ee159e2e). |
| Cloudflare Managed Ruleset | ...7206c737 | N/A | F5 BIG-IP - UnAuth Heap-Overflow - CVE:CVE-2026-94127 | Log | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...549f7356 | N/A | Next.js - Cache Poisoning - CVE:CVE-2026-94543 | Block | Block | Rule metadata description refined. Detection unchanged. |
| 规则集 | 规则 ID | 旧版规则 ID | 描述 | 先前操作 | 新操作 | 备注 |
|---|---|---|---|---|---|---|
| Cloudflare Managed Ruleset | ...a056caff | N/A | 命令注入 - 通用 8 - uri - Beta | 记录日志 | 阻止 | 此规则已合并至原始规则“命令注入 - 通用 8 - uri”（ID: ...ee159e2e）。 |
| Cloudflare Managed Ruleset | ...7206c737 | N/A | F5 BIG-IP - 未授权堆溢出 - CVE:CVE-2026-94127 | 记录日志 | 阻止 | 这是一项新检测。 |
| Cloudflare Managed Ruleset | ...549f7356 | N/A | Next.js - 缓存投毒 - CVE:CVE-2026-94543 | 阻止 | 阻止 | 规则元数据描述已优化，检测逻辑保持不变。 |
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