CVE-2018-6794
Suricata HTTP Detection Bypass
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.
INFO
Published Date :
Feb. 7, 2018, 5:29 a.m.
Last Modified :
March 1, 2019, 11:33 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2018-6794 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2018-6794
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-6794.
| URL | Resource |
|---|---|
| https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html | Mailing List Third Party Advisory |
| https://redmine.openinfosecfoundation.org/issues/2427 | Third Party Advisory |
| https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ | Vendor Advisory |
| https://www.exploit-db.com/exploits/44247/ | Exploit Third Party Advisory VDB Entry |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
None
IDS Bypass tricks
Makefile C
✍️ A curated list of CVE PoCs.
awesome cve poc
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-6794 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-6794 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 01, 2019
Action Type Old Value New Value Changed Reference Type https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ No Types Assigned https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 05, 2018
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html [No Types Assigned] -
CVE Modified by [email protected]
Jun. 14, 2018
Action Type Old Value New Value Changed Description Suricata before 4.1 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. 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. Added Reference https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ [No Types Assigned] -
Reanalysis by [email protected]
Jun. 07, 2018
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.1 OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.0.4 -
Initial Analysis by [email protected]
Mar. 13, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://www.exploit-db.com/exploits/44247/ No Types Assigned https://www.exploit-db.com/exploits/44247/ Exploit, Third Party Advisory, VDB Entry Changed Reference Type https://redmine.openinfosecfoundation.org/issues/2427 No Types Assigned https://redmine.openinfosecfoundation.org/issues/2427 Third Party Advisory Changed Reference Type https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 No Types Assigned https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 Patch, Third Party Advisory Added CWE CWE-693 Added CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.1 -
CVE Modified by [email protected]
Mar. 08, 2018
Action Type Old Value New Value Added Reference https://www.exploit-db.com/exploits/44247/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-6794 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-6794
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
59.67 }} -4.79%
score
0.97260
percentile