CVE-2020-5591 Explained : Impact and Mitigation

XACK DNS versions 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 by XACK, Inc. are vulnerable to a denial-of-service attack.

Understanding CVE-2020-5591

XACK DNS versions are susceptible to remote attacks that can lead to a denial of service condition, affecting the recursive resolver's performance or making it a reflector in a reflection attack.

What is CVE-2020-5591?

CVE-2020-5591 is a vulnerability in XACK DNS versions that allows remote attackers to exploit the software, causing a denial of service condition.

The Impact of CVE-2020-5591

The vulnerability can result in a degradation of the recursive resolver's performance or compromise it as a reflector in a reflection attack, potentially disrupting network operations.

Technical Details of CVE-2020-5591

XACK DNS vulnerability details and affected systems.

Vulnerability Description

XACK DNS versions 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 are prone to a denial-of-service attack.

Affected Systems and Versions

Product: XACK DNS
Vendor: XACK, Inc.
Vulnerable Versions: 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0

Exploitation Mechanism

The vulnerability allows remote attackers to exploit XACK DNS, potentially causing a denial of service condition.

Mitigation and Prevention

Protecting systems from CVE-2020-5591.

Immediate Steps to Take

Update XACK DNS to a patched version immediately.
Implement network-level protections to mitigate denial-of-service attacks.

Long-Term Security Practices

Regularly update and patch software to prevent vulnerabilities.
Monitor network traffic for any suspicious activity that could indicate an attack.

Patching and Updates

Apply security patches provided by XACK, Inc. promptly to address the vulnerability.