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From: Marc Deslauriers
Reply-To: Ubuntu Security
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID:
Subject: [USN-3434-1] Libidn vulnerability
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==========================================================================
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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