CVE-2020-6080 : What You Need to Know

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-2020-6080

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

What is CVE-2020-6080?

CVE-2020-6080 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-2020-6080

The vulnerability has a high impact on availability, with a CVSS base score of 7.5, making it a significant threat.

Technical Details of CVE-2020-6080

This section provides technical details of the vulnerability.

Vulnerability Description

The vulnerability arises from errors in parsing mDNS messages, leading to resource exhaustion and a denial-of-service condition.

Affected Systems and Versions

Product: Videolabs
Version: Videolabs libmicrodns 0.1.0

Exploitation Mechanism

The vulnerability can be exploited by sending a malicious mDNS message repeatedly to trigger the flaw.
The issue occurs in the function rr_read_RR when reading the current resource record.
When the RR type is 0x10, the function rr_read_TXT is called, leading to the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2020-6080 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor patches or updates to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update software and firmware to address security vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Videolabs and apply patches promptly to secure systems.