CVEvulnerability
CVE-2018-6794
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-02-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.3 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-693
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.
Affected configurations
• suricata-ids suricata (< 4.0.4)
• debian debian linux 8.0
Related
Weakness · CWE (1)
- CWE-693 Protection Mechanism Failure weakness
References
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html Mailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2427 Third Party Advisory
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ Vendor Advisory
- https://www.exploit-db.com/exploits/44247/ Exploit, Third Party Advisory, VDB Entry
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html Mailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2427 Third Party Advisory
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ Vendor Advisory
- https://www.exploit-db.com/exploits/44247/ Exploit, Third Party Advisory, VDB Entry