CVE-2026-71855mediumCWE-697

Suricata flow: IPv4/IPv6 hash collision can reuse wrong flow state

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.9epss 0.3%

probabilidad de explotación

0.3%top 76% de las CVE

explotación observada

noninguna fuente lo reporta

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Productos afectados

OISF · suricata

Referencias

https://github.com/OISF/suricata/commit/181b3b2fdd1fe87e4534de4fc79e29a083ef125f https://github.com/OISF/suricata/commit/4e2f23d031fbcfd72883bacd3d723c9874f23701 https://github.com/OISF/suricata/commit/bc41dcc854e24487d3786ce578a8a86a8350ab20 https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 https://github.com/OISF/suricata/security/advisories/GHSA-fvwh-wjcq-2586 https://redmine.openinfosecfoundation.org/issues/8558