9.1

CVE-2019-18792

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Oisf ≫ Suricata Version >= 4.1.5 < 4.1.6
Oisf ≫ Suricata Version5.0.0
Debian ≫ Debian Linux Version8.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.52% 0.828
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
nvd@nist.gov 6.4 10 4.9
AV:N/AC:L/Au:N/C:N/I:P/A:P
CWE-436 Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

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
Third Party Advisory
Exploit
https://redmine.openinfosecfoundation.org/issues/3394
Third Party Advisory
Exploit