HTTP Detection Bypass in Suricata from Open Information Security Foundation
CVE-2018-6794
Key Information:
- Vendor
Suricata-ids
- Status
- Vendor
- CVE Published:
- 7 February 2018
Badges
What is CVE-2018-6794?
The vulnerability in Suricata allows a malicious server to exploit an HTTP detection bypass flaw. When a server disrupts a standard TCP flow and transmits data before completing the 3-way handshake, this malicious data will be accepted by web clients, such as web browsers or Linux CLI utilities. However, Suricata's IDS signatures fail to recognize this traffic, making it predominantly an issue for HTTP protocol signatures and TCP stream content, while TCP packets are inspected as expected. This can lead to undetected malicious activities, emphasizing the need for immediate updating to ensure robust network security.
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Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
37% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved