CVE-2021-37592
CRITICALSuricata < 5.0.8 and 6.x < 6.0.4 - TCP Evasion via Crafted Segment Sequence
Title source: llmDescription
Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of segments.
References (3)
Core 3
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/OISF/suricata/releases
Release Notes, Vendor Advisory x_refsource_confirm
https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942
Permissions Required, Third Party Advisory x_refsource_confirm
https://redmine.openinfosecfoundation.org/issues/4569
Scores
CVSS v3
9.8
EPSS
0.0155
EPSS Percentile
72.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
oisf/suricata
< 5.0.8
Published
Nov 19, 2021
Tracked Since
Feb 18, 2026