CVE-2018-21035

In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
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
mitreCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:C/UI:N
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 61%
VendorProductVersion
qtqt
𝑥
≤ 5.14.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
qtwebsockets-opensource-src
bullseye
5.15.2-2
fixed
buster
ignored
stretch
ignored
jessie
no-dsa
bookworm
5.15.8-2
fixed
trixie
5.15.13-2
fixed
sid
5.15.15-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
qtwebsockets-opensource-src
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
ignored
focal
needs-triage
eoan
ignored
bionic
needs-triage
xenial
needs-triage
trusty
dne
Common Weakness Enumeration
References
https://bugreports.qt.io/browse/QTBUG-70693
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735
https://bugreports.qt.io/browse/QTBUG-70693
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735