CVE-2018-10920 : What You Need to Know

Knot Resolver before version 2.4.1 has a vulnerability due to improper input validation, allowing remote attackers to manipulate the cache.

Understanding CVE-2018-10920

This CVE involves a bug in the DNS resolver component of Knot Resolver that can be exploited by attackers.

What is CVE-2018-10920?

The vulnerability in Knot Resolver before version 2.4.1 allows remote attackers to maliciously manipulate the cache by exploiting improper input validation.

The Impact of CVE-2018-10920

Base Score: 7.5 (High Severity)
Attack Vector: Network
Integrity Impact: High
Attackers can exploit this vulnerability remotely without requiring privileges.

Technical Details of CVE-2018-10920

Knot Resolver vulnerability details and affected systems.

Vulnerability Description

The bug in Knot Resolver before version 2.4.1 stems from improper input validation, enabling remote manipulation of the cache.

Affected Systems and Versions

Affected Product: knot-resolver
Vendor: cz.nic
Vulnerable Versions: Before 2.4.1

Exploitation Mechanism

Attackers can exploit this vulnerability remotely through the network without needing any user interaction.

Mitigation and Prevention

Protecting systems from CVE-2018-10920.

Immediate Steps to Take

Update Knot Resolver to version 2.4.1 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Apply patches and updates provided by cz.nic to address the vulnerability.