Double Free in Videolabs Libmicrodns

CVE-2020-6072

An exploitable code execution vulnerability exists in the label-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the rr_decode function's return value is not checked, leading to a double free that could be exploited to execute arbitrary code. An attacker can send an mDNS message to trigger this vulnerability.

Vulnerability class: Double Free

EPSS: 0.036 (88.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-6072?
CVE-2020-6072 is a critical-severity vulnerability in Videolabs Libmicrodns, classified under Double Free. CVSS score: 9.8/10. Published 2020-03-24.
How severe is CVE-2020-6072?
Critical severity. CVSS v3 base score is 9.8 out of 10.