CVE-2018-6794
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Suricata
PublishedFeb 7, 2018
First seenFeb 7, 2018
How to fix
Update
- suricata-ids suricata4.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| suricata-ids suricata | v < 4.0.4 | 4.0.4 |
| debian debian_linux | 8.0 | — |
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