CVE-2019-2503: Canonical Ubuntu Linux

Medium severity, CVSS 6.4. EPSS: 2.5% chance of exploitation in the next 30 days.

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Connection Handling). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Server executes to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 6.4 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H).

Affected products

  • Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 18.10 only
  • MariaDB MariaDB: from 5.5.0, before 5.5.62 (fixed in 5.5.62); from 10.0.0, before 10.0.37 (fixed in 10.0.37); from 10.1.0, before 10.1.36 (fixed in 10.1.36); from 10.2.0, before 10.2.18 (fixed in 10.2.18); from 10.3.0, before 10.3.10 (fixed in 10.3.10)
  • Netapp Active Iq Unified Manager: from 7.3; from 9.5
  • Netapp Oncommand Insight: affected versions not specified
  • Netapp Oncommand Workflow Automation: affected versions not specified
  • Netapp Snapcenter: affected versions not specified
  • Oracle MySQL: from 5.6.0, up to and including 5.6.42; from 5.7.0, up to and including 5.7.24; from 8.0.0, up to and including 8.0.13
  • Red Hat Enterprise Linux Desktop: version 7.0 only; version 8.0 only
  • Red Hat Enterprise Linux Eus: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only
  • Red Hat Enterprise Linux Server: version 7.0 only; version 8.0 only
  • Red Hat Enterprise Linux Server Aus: version 8.2 only; version 8.4 only; version 8.6 only
  • Red Hat Enterprise Linux Server Tus: version 8.2 only; version 8.4 only; version 8.6 only
  • Red Hat Enterprise Linux Workstation: version 7.0 only; version 8.0 only

Published 2019-01-16. Last modified 2026-06-17.