Buffer overflow in Oisf Suricata

CVE-2021-37592

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.

Vulnerability class: Buffer Overflow

EPSS: 0.016 (72.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Oisf Suricata
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
cve@mitre.org (Permissions Required, x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-37592?: CVE-2021-37592 is a critical-severity vulnerability in Oisf Suricata, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-11-19.
How severe is CVE-2021-37592?: Critical severity. CVSS v3 base score is 9.8 out of 10.