USN-4168-1: Libidn2 vulnerabilities
libidn2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
Summary
Several security issues were fixed in Libidn2.
Software Description
- 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
- idn2 – 2.0.5-1ubuntu0.3
- libidn2-0 – 2.0.5-1ubuntu0.3
- Ubuntu 18.04 LTS
- idn2 – 2.0.4-1.1ubuntu0.2
- libidn2-0 – 2.0.4-1.1ubuntu0.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
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