Vulnerability · Published Nov 19, 2021 · Assigned by mitre
CVE-2021-37592
Critical 9.8
In plain English
A critical-severity security flaw in the suricata package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.6%top 24.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | suricata | 6.0.4-r0 | ALPINE-CVE-2021-37592 |
| Alpine:v3.21 | suricata | 6.0.4-r0 | ALPINE-CVE-2021-37592 |
| Alpine:v3.22 | suricata | 6.0.4-r0 | ALPINE-CVE-2021-37592 |
| Alpine:v3.23 | suricata | 6.0.4-r0 | ALPINE-CVE-2021-37592 |
| Alpine:v3.24 | suricata | 6.0.4-r0 | ALPINE-CVE-2021-37592 |
| Debian:13 | suricata | 1:6.0.4-1 | DEBIAN-CVE-2021-37592 |
| Debian:14 | suricata | 1:6.0.4-1 | DEBIAN-CVE-2021-37592 |
Affected products (as reported)
References
- https://github.com/OISF/suricata/releases x_refsource_MISC
- https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942 x_refsource_CONFIRM
- https://redmine.openinfosecfoundation.org/issues/4569 x_refsource_CONFIRM