CVE-2026-71855mediumCWE-697

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

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 5.9epss 0.3%

probabilidade de exploração

0.3%top 76% das CVEs

exploração observada

nãonenhuma fonte 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

Produtos afetados

OISF · suricata

Referências

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