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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 base score: 7.5

Status

Package Release Status
libmicrodns
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Ignored
(reached end-of-life)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

vlc
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)