CVE-2026-71855— Suricata流处理IPv4/IPv6哈希冲突导致状态复用漏洞
一分钟漏洞结论
影响对象
OISF suricata
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash.c can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address wor
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一、 漏洞 CVE-2026-71855 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Suricata flow: IPv4/IPv6 hash collision can reuse wrong flow state
来源: CVE Program / CVE List V5
Vulnerability Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash.c can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address words, ports, protocol, VLAN, recursion level, live device, and hash bucket align. An IPv6 packet can therefore reuse IPv4 flow state or the reverse, causing incorrect flowbit state, detection bypass, or IP-only bypass. This issue is fixed in versions 8.0.6 and 7.0.17.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
不充分的比较
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-71855 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-71855 补丁与修复 (3)
CVE-2026-71855 其他参考 (4)
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🔗 Open Information Security Foundation x_refsource_MISC
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🔗 Release 8.0.6 · OISF/suricata · GitHub x_refsource_MISC
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🔗 Release 7.0.17 · OISF/suricata · GitHub x_refsource_MISC
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同批安全公告 · OISF · 2026-09-18 · 共 17 条
| CVE-2026-57228 | 8.2 HIGH | Suricata SMTP/MIME 解码器堆越界读取漏洞 |
| CVE-2026-63446 | 7.5 HIGH | Suricata 流量解析导致资源耗尽漏洞 |
| CVE-2026-63447 | 7.5 HIGH | Suricata FTP 模块 CPU 二次消耗漏洞 |
| CVE-2026-63452 | 7.5 HIGH | Suricata Brotli压缩炸弹导致CPU耗尽 |
| CVE-2026-57227 | 7.5 HIGH | Suricata MQTT 资源耗尽漏洞 |
| CVE-2026-71418 | 7.5 HIGH | Suricata doh2 二次CPU消耗漏洞 |
| CVE-2026-57223 | 7.0 HIGH | Suricata Windows 未引用服务路径本地提权漏洞 |
| CVE-2026-57224 | 6.5 MEDIUM | Suricata DHCP 单方向流量资源耗尽漏洞 |
| CVE-2026-63448 | 5.9 MEDIUM | Suricata SMB 流资源耗尽漏洞 |
| CVE-2026-57229 | 5.3 MEDIUM | Suricata SMTP/MIME 状态重置检测绕过漏洞 |
| CVE-2026-57222 | 5.3 MEDIUM | Suricata ippair哈希碰撞致状态复用错误漏洞 |
| CVE-2026-63450 | 3.7 LOW | Suricata FTP 应用层检测禁用漏洞 |
| CVE-2026-63449 | 3.7 LOW | Suricata SIP大消息体帧关键字绕过漏洞 |
| CVE-2026-57226 | 3.7 LOW | Suricata SWF解压缩堆溢出漏洞 |
| CVE-2026-63451 | 3.3 LOW | Suricata 规则解析堆缓冲区溢出 |
| CVE-2026-57225 | 3.3 LOW | Suricata JSON/NDJSON 数据集加载空指针解引用漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-71855
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