| Name | CVE-2018-21035 |
| Description | 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). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 953049 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qtwebsockets-opensource-src (PTS) | buster | 5.11.3-5 | vulnerable |
| bullseye | 5.15.2-2 | fixed |
| bookworm | 5.15.8-2 | fixed |
| sid, trixie | 5.15.10-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - qtwebsockets-opensource-src <ignored> (Minor issue, fix adds new API only)
[stretch] - qtwebsockets-opensource-src <ignored> (Minor issue)
[jessie] - qtwebsockets-opensource-src <no-dsa> (Minor issue)
https://bugreports.qt.io/browse/QTBUG-70693
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735
https://github.com/qt/qtwebsockets/commit/ed93680f34e92ad0383aa4e610bb65689118ca93