1. Ubuntu Security Notices
  2. USN-5173-2

USN-5173-2: libmodbus vulnerabilities

Publication date

9 December 2021

Overview

libmodbus could be made to crash if it received specially crafted input.

Releases

Packages

  • libmodbus - Library to send/receive data according to the Modbus protocol

Details

USN-5173-1 fixed vulnerabilities in libmodbus.
This update provides the corresponding updates for Ubuntu 14.04 ESM and
Ubuntu 16.04 ESM.

Original advisory details:

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.

USN-5173-1 fixed vulnerabilities in libmodbus.
This update provides the corresponding updates for Ubuntu 14.04 ESM and
Ubuntu 16.04 ESM.

Original advisory details:

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial libmodbus5 –  3.0.6-1ubuntu0.1~esm1  
14.04 trusty libmodbus5 –  3.0.5-1ubuntu0.1~esm1  

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References

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