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TI-2018-04969 Aliases CVE-2018-6794GHSA-wfvj-pf5x-3547

Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and…

Priority MEDIUM 45CWE-693Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-693.

Summary

Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c. If a malicious server breaks a normal TCP flow and sends data before the 3-way handshake is complete, then the data sent by the malicious server will be accepted by web clients such as a web browser or Linux CLI utilities, but ignored by Suricata IDS signatures. This mostly affects IDS signatures for the HTTP protocol and TCP stream content; signatures for TCP packets will inspect such network traffic as usual.

Why it matters now

EPSS 0.23687 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:*before 4.0.4VulnerableSuricata-ids
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* Versions before 4.0.4 Vulnerable ·Suricata-ids
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-6794
  2. 2026-10-03 Alias added: GHSA-wfvj-pf5x-3547

References

Exploit 1

Patch 1

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences