1. Ubuntu Security Notices
  2. USN-3421-1

USN-3421-1: Libidn2 vulnerability

Publication date

18 September 2017

Overview

Libidn2 could be made to crash if it received specially crafted input.

Releases

Packages

  • libidn2-0 - Internationalized domain names (IDNA2008) library

Details

It was discovered that Libidn2 incorrectly handled certain input. A
remote attacker could possibly use this issue to cause Libidn2 to crash,
resulting in a denial of service.

It was discovered that Libidn2 incorrectly handled certain input. A
remote attacker could possibly use this issue to cause Libidn2 to crash,
resulting in a denial of service.

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
17.04 zesty libidn2-0 –  0.16-1ubuntu0.1
idn2 –  0.16-1ubuntu0.1

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References

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