CVE-2021-37592 : Vulnerability Insights and Analysis

Suricata before 5.0.8 and 6.x before 6.0.4 has a vulnerability that allows TCP evasion through a crafted TCP/IP stack. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-37592

This section delves into the details of the CVE-2021-37592 vulnerability affecting Suricata.

What is CVE-2021-37592?

Suricata versions before 5.0.8 and 6.x before 6.0.4 are susceptible to TCP evasion caused by a client with a specifically crafted TCP/IP stack capable of sending a particular sequence of segments.

The Impact of CVE-2021-37592

The vulnerability could be exploited by threat actors to evade detection mechanisms and potentially launch nefarious activities undetected.

Technical Details of CVE-2021-37592

Explore the technical aspects of the CVE-2021-37592 vulnerability in this section.

Vulnerability Description

The vulnerability in Suricata allows for TCP evasion, enabling a client to bypass security measures through a carefully crafted sequence of segments.

Affected Systems and Versions

Suricata versions prior to 5.0.8 and 6.x before 6.0.4 are impacted by this vulnerability.

Exploitation Mechanism

Threat actors can exploit this vulnerability by leveraging a client with a manipulated TCP/IP stack to send specific segment sequences.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the exploitation of CVE-2021-37592.

Immediate Steps to Take

Users are advised to update Suricata to versions 5.0.8 and 6.0.4 or newer to prevent exploitation of this vulnerability.

Long-Term Security Practices

Implementing robust network security measures and intrusion detection systems can enhance overall cybersecurity posture.

Patching and Updates

Regularly applying security patches and staying up to date with software versions can mitigate risks associated with known vulnerabilities.