CVE-2019-18792
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 84.4% of scored records. A rank, not a probability.
- NVD base score
- 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-01-06 17:52Z6 YR AGO
- Last updated
- 2024-08-05 02:02Z2 YR AGO
- Reserved
- 2019-11-06
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-436Interpretation ConflictClass
- Data version
- 5.1
- Document digest
- 9eee2026011cd0ac88dd74082f6408d62b7286c3a75d911752122699cd501a21
05 Affected products
06 References
- redmine.openinfosecfoundation.orghttps://redmine.openinfosecfoundation.org/issues/3324
- github.comhttps://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006
- redmine.openinfosecfoundation.orghttps://redmine.openinfosecfoundation.org/issues/3394
- github.comhttps://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4b
- lists.debian.org[debian-lts-announce] 20200130 [SECURITY] [DLA 2087-1] suricata security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00032.html
07 Fixed in
Debian 13
- suricata Fixed in 1:5.0.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- suricata Fixed in 1:5.0.2-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- suricata No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- suricata No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.