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USN-5173-2: libmodbus vulnerabilities

9 December 2021

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

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04
Ubuntu 14.04

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

References

Related notices

  • USN-5173-1: libmodbus5, libmodbus, libmodbus-dev

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Further reading