CVE-2018-21035 — Vulnetix

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CVE-2018-21035 PUBLISHED

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).

EPSS 0.47% · 64.2th percentile

Risk Scores

EPSS Score

0.47%

64.2th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	qtwebsockets-opensource-src	5.9.3-0ubuntu1, 5.9.4-0ubuntu1, 5.9.5-0ubuntu1
Ubuntu:16.04:LTS	qtwebsockets-opensource-src	0, 5.4.2-2build1, 5.5.1-4build1
Ubuntu:20.04:LTS	qtwebsockets-opensource-src	0, 5.12.4-1, 5.12.5-2

Timeline

Feb 28, 2020 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Dec 25, 2021 EPSS Score
Feb 25, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score
Nov 1, 2022 EPSS Score
Jan 2, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2018-21035 third-party-advisory
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735 third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2018-21035 third-party-advisory

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