CVE-2020-6079 : Exploit Details and Defense Strategies

An exploitable denial-of-service vulnerability exists in the resource allocation handling of Videolabs libmicrodns 0.1.0. When encountering errors while parsing mDNS messages, some allocated data is not freed, possibly leading to a denial-of-service condition via resource exhaustion. This vulnerability has a CVSS base score of 7.5.

Understanding CVE-2020-6079

This CVE involves a denial-of-service vulnerability in Videolabs libmicrodns 0.1.0.

What is CVE-2020-6079?

CVE-2020-6079 is a vulnerability in Videolabs libmicrodns 0.1.0 that allows an attacker to trigger a denial-of-service condition by sending a malicious mDNS message.

The Impact of CVE-2020-6079

The vulnerability has a high impact, with a CVSS base score of 7.5. It can result in a denial-of-service condition due to resource exhaustion.

Technical Details of CVE-2020-6079

This section provides technical details of the vulnerability.

Vulnerability Description

The vulnerability in Videolabs libmicrodns 0.1.0 arises from errors in parsing mDNS messages, leading to resource allocation issues and a potential denial-of-service scenario.

Affected Systems and Versions

Product: Videolabs
Version: Videolabs libmicrodns 0.1.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigation and Prevention

Protecting systems from CVE-2020-6079 is crucial to prevent denial-of-service attacks.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Monitor network traffic for any suspicious mDNS messages.
Implement network-level protections to filter potentially malicious traffic.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate potential weaknesses.

Patching and Updates

Stay informed about security advisories from the vendor.
Apply security patches as soon as they are released to mitigate the risk of exploitation.