CVE-2021-34431

EUVD-2021-21087
In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
Affected Products (NVD)
VendorProductVersion
eclipsemosquitto
1.6 ≤
𝑥
≤ 2.0.10
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mosquitto
bookworm
2.0.11-1.2+deb12u1
fixed
bookworm (security)
2.0.11-1.2+deb12u1
fixed
bullseye
2.0.11-1+deb11u1
no-dsa
bullseye (security)
2.0.11-1+deb11u1
fixed
buster
not-affected
sid
2.0.20-1
fixed
stretch
not-affected
trixie
2.0.20-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mosquitto
bionic
not-affected
focal
Fixed 1.6.9-1ubuntu0.1~esm1
released
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
ignored
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191
https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191