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Sigurnosni nedostatak programske biblioteke libidn

==========================================================================
Ubuntu Security Notice USN-3434-1
October 02, 2017

libidn vulnerability
==========================================================================

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

– Ubuntu 17.04
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

Libidn could be made to crash or run programs if it processed specially
crafted input.

Software Description:
– libidn: implementation of IETF IDN specifications

Details:

It was discovered that Libidn incorrectly handled decoding certain digits.
A remote attacker could use this issue to cause Libidn to crash, resulting
in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 17.04:
libidn11 1.33-1ubuntu0.1

Ubuntu 16.04 LTS:
libidn11 1.32-3ubuntu1.2

Ubuntu 14.04 LTS:
libidn11 1.28-1ubuntu2.2

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

References:
https://www.ubuntu.com/usn/usn-3434-1
CVE-2017-14062

Package Information:
https://launchpad.net/ubuntu/+source/libidn/1.33-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libidn/1.32-3ubuntu1.2
https://launchpad.net/ubuntu/+source/libidn/1.28-1ubuntu2.2

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