CVE-2019-17024: Canonical Ubuntu Linux

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Mozilla developers reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.04 only; version 19.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only; version 10.0 only
• Mozilla Firefox: before 72.0 (fixed in 72.0)
• Mozilla Firefox ESR: before 68.4 (fixed in 68.4)
• Opensuse Leap: version 15.1 only
• Red Hat Enterprise Linux: version 8.0 only
• Red Hat Enterprise Linux Desktop: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Eus: version 7.7 only; version 8.1 only; version 8.2 only; version 8.4 only
• Red Hat Enterprise Linux Server: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.7 only; version 8.2 only; version 8.4 only
• Red Hat Enterprise Linux Server Tus: version 7.7 only; version 8.2 only; version 8.4 only
• Red Hat Enterprise Linux Workstation: version 6.0 only; version 7.0 only

Published 2020-01-08. Last modified 2026-06-17.