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Sicherheit: Mehrere Probleme in Libidn
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Libidn
ID: USN-3068-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 16.04 LTS
Datum: Mi, 24. August 2016, 17:33
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2059
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6263
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8948
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6261
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6262

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <54bfaab8-4017-6db1-6cfb-014c67b35d30@canonical.com>
Subject: [USN-3068-1] Libidn vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-3068-1
August 24, 2016

libidn vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Libidn.

Software Description:
- libidn: implementation of IETF IDN specifications

Details:

Thijs Alkemade, Gustavo Grieco, Daniel Stenberg, and Nikos
Mavrogiannopoulos discovered that Libidn incorrectly handled invalid UTF-8
characters. A remote attacker could use this issue to cause Libidn to
crash, resulting in a denial of service, or possibly disclose sensitive
memory. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2015-2059)

Hanno Böck discovered that Libidn incorrectly handled certain input. A
remote attacker could possibly use this issue to cause Libidn to crash,
resulting in a denial of service. (CVE-2015-8948, CVE-2016-6262,
CVE-2016-6261, CVE-2016-6263)

Update instructions:

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

Ubuntu 16.04 LTS:
libidn11 1.32-3ubuntu1.1

Ubuntu 14.04 LTS:
libidn11 1.28-1ubuntu2.1

Ubuntu 12.04 LTS:
libidn11 1.23-2ubuntu0.1

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

References:
http://www.ubuntu.com/usn/usn-3068-1
CVE-2015-2059, CVE-2015-8948, CVE-2016-6261, CVE-2016-6262,
CVE-2016-6263

Package Information:
https://launchpad.net/ubuntu/+source/libidn/1.32-3ubuntu1.1
https://launchpad.net/ubuntu/+source/libidn/1.28-1ubuntu2.1
https://launchpad.net/ubuntu/+source/libidn/1.23-2ubuntu0.1



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