CVE-2019-18792
Suricata TCP FIN Injection Bypass
Description
An issue was discovered in Suricata 5.0.0. It is possible to bypass/evade any tcp based signature by overlapping a TCP segment with a fake FIN packet. The fake FIN packet is injected just before the PUSH ACK packet we want to bypass. The PUSH ACK packet (containing the data) will be ignored by Suricata because it overlaps the FIN packet (the sequence and ack number are identical in the two packets). The client will ignore the fake FIN packet because the ACK flag is not set. Both linux and windows clients are ignoring the injected packet.
INFO
Published Date :
Jan. 6, 2020, 6:15 p.m.
Last Modified :
Oct. 22, 2024, 5:11 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2019-18792
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-2019-18792.
| URL | Resource |
|---|---|
| https://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4b | Patch Third Party Advisory |
| https://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html | Third Party Advisory |
| https://redmine.openinfosecfoundation.org/issues/3324 | Exploit Third Party Advisory |
| https://redmine.openinfosecfoundation.org/issues/3394 | Exploit Third Party Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-18792 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18792 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.
-
CPE Deprecation Remap by [email protected]
Oct. 22, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 4.1.5 from (excluding) 4.1.6 OR *cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* versions from (including) 4.1.5 from (excluding) 4.1.6 -
CPE Deprecation Remap by [email protected]
Oct. 22, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:5.0.0:*:*:*:*:*:*:* OR *cpe:2.3:a:oisf:suricata:5.0.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-94 CWE-436 -
Modified Analysis by [email protected]
Oct. 29, 2020
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 4.1.5 up to (excluding) 4.1.6 *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.1.0 OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 4.1.5 up to (excluding) 4.1.6 *cpe:2.3:a:suricata-ids:suricata:5.0.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 30, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 21, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Changed Reference Type https://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4b No Types Assigned https://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4b Patch, Third Party Advisory Changed Reference Type https://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006 No Types Assigned https://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006 Patch, Third Party Advisory Changed Reference Type https://redmine.openinfosecfoundation.org/issues/3324 No Types Assigned https://redmine.openinfosecfoundation.org/issues/3324 Exploit, Third Party Advisory Changed Reference Type https://redmine.openinfosecfoundation.org/issues/3394 No Types Assigned https://redmine.openinfosecfoundation.org/issues/3394 Exploit, Third Party Advisory Added CWE NIST CWE-94 Added CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 4.1.5 up to (excluding) 4.1.6 *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.1.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18792 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-2019-18792
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.05 }} -0.43%
score
0.83814
percentile