Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.
Affected products
oisf: suricata
References6
- github.com/OISF/suricata/security/advisories/GHSA-56wx-7hqh-wfgr Vendor Advisory
- github.com/OISF/suricata/commit/52490b8c26909772801afed98df63a6… Patch
- github.com/OISF/suricata/commit/feb0ff91159cea474a983adf92e4b56… Patch
- github.com/OISF/suricata/pull/15704 Patch
- github.com/OISF/suricata/releases/tag/suricata-8.0.6 Release Notes
- redmine.openinfosecfoundation.org/issues/8659 Permissions Required
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 16 · as of 8 November 2026
- CWE
- CWE-755
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