Total vulnerabilities in the database
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.
| Software | From | Fixed in |
|---|---|---|
| suricata-ids / suricata | - | 4.0.4 |
| debian / debian_linux | 8.0 | 8.0.x |