Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : libidn vulnerabilities (USN-3068-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.

Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

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 Bock 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).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libidn11 package.

Risk factor :

High / CVSS Base Score : 7.5
CVSS Temporal Score : 5.9
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 93107 ()

Bugtraq ID:

CVE ID: CVE-2015-2059

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