CVE-2023-5632

EUVD-2023-57925
In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
eclipseCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 25%
Affected Products (NVD)
VendorProductVersion
eclipsemosquitto
2.0.5
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
fixed
bullseye (security)
2.0.11-1+deb11u1
fixed
buster
not-affected
sid
2.0.20-1
fixed
trixie
2.0.20-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mosquitto
bionic
not-affected
focal
not-affected
jammy
not-affected
lunar
not-affected
mantic
not-affected
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d
https://github.com/eclipse/mosquitto/pull/2053
https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d
https://github.com/eclipse/mosquitto/pull/2053