CVE-2020-6078

Name: CVE-2020-6078
Creator: NVD / NIST
Published: 2020-03-24T21:15:14.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.99%

Last modified Jun 17, 2026

CVE-2020-6078 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An exploitable denial-of-service vulnerability exists in the message-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing mDNS messages in mdns_recv, the return value of the mdns_read_header function is not checked, leading to an uninitialized variable usage that eventually results in a null pointer dereference, leading to service crash. EPSS estimates a 2.99% chance of exploitation in the next 30 days.

Description

An exploitable denial-of-service vulnerability exists in the message-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing mDNS messages in mdns_recv, the return value of the mdns_read_header function is not checked, leading to an uninitialized variable usage that eventually results in a null pointer dereference, leading to service crash. An attacker can send a series of mDNS messages to trigger this vulnerability.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.99%

85.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-252

Affected Software

Vendor	Product	Versions
Videolabs	Libmicrodns	0.1.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://security.gentoo.org/glsa/202005-10Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001Exploit, Technical Description, Third Party Advisory
https://www.debian.org/security/2020/dsa-4671Third Party Advisory
https://security.gentoo.org/glsa/202005-10Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001Exploit, Technical Description, Third Party Advisory
https://www.debian.org/security/2020/dsa-4671Third Party Advisory

Timeline

Published: Mar 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6078?

How severe is CVE-2020-6078?

CVE-2020-6078 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.99% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6078?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-6078?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST