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Ubuntu Security Notice USN-3421-1

Ubuntu Security Notice USN-3421-1
Posted Sep 18, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3421-1 - 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.

tags | advisory, remote, denial of service
systems | linux, ubuntu
SHA-256 | 6ae7719d16a32671a0c9681af049b687e272cc35aaba6ec3ad7821b5df336045

Ubuntu Security Notice USN-3421-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3421-1
September 18, 2017

libidn2-0 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04

Summary:

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

Software Description:
- 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.

Update instructions:

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

Ubuntu 17.04:
A idn2A A A A A A A A A A A A A A A A A A A A A A A A A A A A 0.16-1ubuntu0.1
A libidn2-0A A A A A A A A A A A A A A A A A A A A A A A 0.16-1ubuntu0.1

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

References:
A https://www.ubuntu.com/usn/usn-3421-1
A CVE-2017-14062

Package Information:
A https://launchpad.net/ubuntu/+source/libidn2-0/0.16-1ubuntu0.1
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