What’s Vulnerable › Vulnerabilities

CVE-2018-14568

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-07-23 · updated 2026-06-17

Description

Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server. This allows detection bypass because Windows TCP clients proceed with normal processing of TCP data that arrives shortly after an RST (i.e., they act as if the RST had not yet been received).

Affected products

• Suricata-Ids Suricata: before 4.0.5 — fixed in 4.0.5

How to fix

Upgrade to a fixed version: Suricata-Ids Suricata 4.0.5. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/pull/3428/commits/843d0b7a10bb45627f94764a6c5d468a24143345
• https://github.com/kirillwow/ids_bypass
• https://redmine.openinfosecfoundation.org/issues/2501
• https://suricata-ids.org/2018/07/18/suricata-4-0-5-available/
• https://github.com/OISF/suricata/pull/3428/commits/843d0b7a10bb45627f94764a6c5d468a24143345
• https://github.com/kirillwow/ids_bypass
• https://redmine.openinfosecfoundation.org/issues/2501
• https://suricata-ids.org/2018/07/18/suricata-4-0-5-available/

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