CVE-2021-37592: Critical severity OISF Suricata vulnerability

Published Nov 19, 2021
·
Updated

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 Software

12 affected componentsFixes available
OISF Suricata<5.0.8
OISF Suricata>=6.0.0<6.0.4
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0
alpine/suricata>=6.0.0<6.0.4-r0
6.0.4-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade alpine/suricata to a version that resolves this vulnerability.

    Fixed in 6.0.4-r0

Event History

Nov 19, 2021
CVE Published
via MITRE·02:18 PM
Data Sourced
via MITRE·02:18 PM
Description
Data Sourced
via NVD·03:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is CVE-2021-37592?

CVE-2021-37592 is a vulnerability in Suricata before 5.0.8 and 6.x before 6.0.4 that allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of segments.

2

How severe is CVE-2021-37592?

CVE-2021-37592 has a severity rating of 9.8 (Critical).

3

Which software versions are affected by CVE-2021-37592?

Suricata versions before 5.0.8 and between 6.0.0 and 6.0.4 are affected by CVE-2021-37592.

4

How can I fix CVE-2021-37592?

To fix CVE-2021-37592, update Suricata to version 5.0.8 or 6.0.4 depending on the affected version.

5

Where can I find more information about CVE-2021-37592?

You can find more information about CVE-2021-37592 in the Suricata forum, Suricata GitHub releases, and the Open Infosec Foundation Redmine.

Company

Resources

Contact

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