CVE-2018-6794
Published: 7 February 2018
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
suricata Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Needed
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Not vulnerable
(1:4.0.5-1)
|
|
| kinetic |
Not vulnerable
(1:4.0.5-1)
|
|
| lunar |
Not vulnerable
(1:4.0.5-1)
|
|
| mantic |
Not vulnerable
(1:4.0.5-1)
|
|
| trusty |
Does not exist
(trusty was needs-triage)
|
|
| upstream |
Released
(1:4.0.5-1)
|
|
| xenial |
Needed
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |