USN-4168-1: Libidn2 vulnerabilities

29 October 2019

Several security issues were fixed in Libidn2.

Releases

Packages

  • libidn2 - Internationalized domain names (IDNA2008/TR46) command line tool

Details

It was discovered that Libidn2 incorrectly handled certain inputs.
A attacker could possibly use this issue to impersonate domains.
(CVE-2019-12290)

It was discovered that Libidn2 incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-18224)

Update instructions

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

Ubuntu 19.04
Ubuntu 18.04

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