{"id":"UBUNTU-CVE-2020-13962","details":"Qt 5.12.2 through 5.14.2, as used in unofficial builds of Mumble 1.3.0 and other products, mishandles OpenSSL's error queue, which can cause a denial of service to QSslSocket users. Because errors leak in unrelated TLS sessions, an unrelated session may be disconnected when any handshake fails. (Mumble 1.3.1 is not affected, regardless of the Qt version.)","modified":"2026-04-22T12:29:35.746846Z","published":"2020-06-09T00:15:00Z","related":["USN-8076-1"],"upstream":["CVE-2020-13962"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-13962"},{"type":"REPORT","url":"https://github.com/mumble-voip/mumble/pull/4032"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-13962"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8076-1"}],"affected":[{"package":{"name":"qtbase-opensource-src","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/qtbase-opensource-src@5.12.8+dfsg-0ubuntu2.1+esm3?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.12.8+dfsg-0ubuntu2.1+esm3"}]}],"versions":["5.12.4+dfsg-4ubuntu1","5.12.5+dfsg-2","5.12.5+dfsg-8","5.12.5+dfsg-8build1","5.12.5+dfsg-9build1","5.12.8+dfsg-0ubuntu1","5.12.8+dfsg-0ubuntu2.1","5.12.8+dfsg-0ubuntu2.1+esm1","5.12.8+dfsg-0ubuntu2.1+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5concurrent5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5core5a"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5dbus5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5gui5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5network5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5opengl5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5printsupport5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-ibase"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-mysql"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-odbc"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-psql"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-sqlite"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5sql5-tds"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5test5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5widgets5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"libqt5xml5"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-default"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-flatpak-platformtheme"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-gtk-platformtheme"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-qmake"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-qmake-bin"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qt5-xdgdesktopportal-platformtheme"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qtbase5-dev-tools"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qtbase5-doc-html"},{"binary_version":"5.12.8+dfsg-0ubuntu2.1+esm3","binary_name":"qtbase5-examples"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13962.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}