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TI-2019-13529 Aliases CVE-2019-18792GHSA-p4hg-mvq8-47jj

An issue was discovered in Suricata 5.0.0.

Priority MEDIUM 44CWE-436Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in Suricata 5.0.0. It is possible to bypass/evade any tcp based signature by overlapping a TCP segment with a fake FIN packet. The fake FIN packet is injected just before the PUSH ACK packet we want to bypass. The PUSH ACK packet (containing the data) will be ignored by Suricata because it overlaps the FIN packet (the sequence and ack number are identical in the two packets). The client will ignore the fake FIN packet because the ACK flag is not set. Both linux and windows clients are ignoring the injected packet.

Why it matters now

EPSS 0.02521 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by 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 · 3

CPEVersionsRoleVendor
cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*4.1.5 to before 4.1.6VulnerableOISF
cpe:2.3:a:oisf:suricata:5.0.0:*:*:*:*:*:*:*5.0.0VulnerableOISF
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* Versions 4.1.5 to before 4.1.6 Vulnerable ·OISF
  • cpe:2.3:a:oisf:suricata:5.0.0:*:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·OISF
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-18792
  2. 2026-10-03 Alias added: GHSA-p4hg-mvq8-47jj

References

Exploit 2

Patch 2

Advisory 1

Sources

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