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CVE-2020-6080

Published: 24 March 2020

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. An attacker can send one mDNS message repeatedly to trigger this vulnerability through the function rr_read_RR [5] reads the current resource record, except for the RDATA section. This is read by the loop at in rr_read. For each RR type, a different function is called. When the RR type is 0x10, the function rr_read_TXT is called at [6].

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
vlc
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
bionic Needs triage

focal Needs triage

upstream Needs triage

hirsute Ignored
(end of life)
jammy Needs triage

impish Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
trusty Ignored
(end of standard support)
xenial Needs triage

mantic Needs triage

lunar Ignored
(end of life, was needs-triage)
libmicrodns
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Ignored
(end of life)
focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H