CVE-2020-10772 : Vulnerability Insights and Analysis

Unbound in Red Hat Enterprise Linux 7 is affected by an incomplete fix for CVE-2020-12662, leading to potential query amplification vulnerabilities.

Understanding CVE-2020-10772

This CVE involves an incomplete fix for a previous vulnerability in Unbound, impacting Red Hat Enterprise Linux 7.

What is CVE-2020-10772?

An incomplete fix for CVE-2020-12662 in Unbound for Red Hat Enterprise Linux 7
Vulnerable versions of Unbound could still amplify incoming queries
Does not affect upstream versions of Unbound

The Impact of CVE-2020-10772

Allows amplification of incoming queries into a large number of queries
Lower amplification ratio compared to previous vulnerable versions

Technical Details of CVE-2020-10772

Unbound in Red Hat Enterprise Linux 7 is affected by an incomplete fix for a previous vulnerability.

Vulnerability Description

Incomplete fix for CVE-2020-12662 in Unbound
Vulnerable versions can amplify incoming queries

Affected Systems and Versions

Product: Unbound
Vendor: n/a
Version: unbound-1.6.6-5.el7_8

Exploitation Mechanism

Vulnerable versions can amplify incoming queries into multiple queries

Mitigation and Prevention

Steps to address and prevent the CVE-2020-10772 vulnerability.

Immediate Steps to Take

Apply patches and updates provided by Red Hat
Monitor network traffic for unusual query amplification

Long-Term Security Practices

Regularly update and patch Unbound and related software
Implement network security measures to detect and prevent query amplification attacks

Patching and Updates

Keep Unbound and Red Hat Enterprise Linux 7 up to date with the latest security patches