[USN-5173-1] libmodbus vulnerabilities

Eduardo Barretto eduardo.barretto at canonical.com
Mon Dec 6 15:07:34 UTC 2021

Ubuntu Security Notice USN-5173-1
December 06, 2021

libmodbus vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS


libmodbus could be made to crash if it received specially crafted

Software Description:
- libmodbus: Library to send/receive data according to the Modbus protocol


It was discovered that libmodbus incorrectly handled inputs. An attacker
could possibly use this issue to cause a denial of service or other
unspecified impact.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  libmodbus5                      3.0.6-2+deb9u1build0.18.04.1

In general, a standard system update will make all the necessary changes.

  CVE-2019-14462, CVE-2019-14463

Package Information:

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