Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2018-6794 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1	CVE	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html	CVE	Mailing ListThird Party Advisory
https://redmine.openinfosecfoundation.org/issues/2427	CVE	Third Party Advisory
https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/	CVE	Vendor Advisory
https://www.exploit-db.com/exploits/44247/	CVE	ExploitThird Party AdvisoryVDB Entry
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1	[email protected]	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html	[email protected]	Mailing ListThird Party Advisory
https://redmine.openinfosecfoundation.org/issues/2427	[email protected]	Third Party Advisory
https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/	[email protected]	Vendor Advisory
https://www.exploit-db.com/exploits/44247/	[email protected]	ExploitThird Party AdvisoryVDB Entry

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-693	Protection Mechanism Failure	[email protected]

Affected Products

Product	Versions
suricata-ids suricata	< 4.0.4
CPE cpe:2.3:a:suricata-ids:suricata:::::::: Remediation No remediation found in references.
debian debian linux	8.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Mar 1, 2019	Modified Analysis	[email protected]
Dec 5, 2018	CVE Modified	[email protected]
Jun 14, 2018	CVE Modified	[email protected]
Jun 7, 2018	Reanalysis	[email protected]
Mar 13, 2018	Initial Analysis	[email protected]
Mar 8, 2018	CVE Modified	[email protected]