Protection Mechanism Failure Affecting suricata package, versions <1:4.0.4-1
Threat Intelligence
Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN12-SURICATA-1560119
- published7 Feb 2018
- disclosed7 Feb 2018
Introduced: 7 Feb 2018
CVE-2018-6794 (opens in a new tab)How to fix?
Upgrade Debian:12 suricata to version 1:4.0.4-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream suricata package and not the suricata package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2018-6794
- https://redmine.openinfosecfoundation.org/issues/2427
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
- https://www.exploit-db.com/exploits/44247/
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-6794
- https://www.exploit-db.com/exploits/44247