[USN-2982-1] Libksba vulnerabilities

Fabricante: Ubuntu
Fecha: 17/05/2016
Identificador: USN-2982-1
[USN-2982-1] Libksba vulnerabilities
========================================================================== Ubuntu Security Notice USN-2982-1 May 17, 2016 libksba vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS - Ubuntu 15.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: Libksba could be made to crash or run programs if it decoded specially crafted data. Software Description: - libksba: X.509 and CMS support library Details: Hanno Böck discovered that Libksba incorrectly handled decoding certain BER data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4353) Hanno Böck discovered that Libksba incorrectly handled decoding certain BER data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4354, CVE-2016-4355) Hanno Böck discovered that Libksba incorrectly handled incorrect utf-8 strings when decoding certain DN data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4356) Pascal Cuoq discovered that Libksba incorrectly handled incorrect utf-8 strings when decoding certain DN data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-4574) Pascal Cuoq discovered that Libksba incorrectly handled decoding certain data. An attacker could use this issue to cause Libksba to crash, resulting in a denial of service. (CVE-2016-4579) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: libksba8 1.3.3-1ubuntu0.16.04.1 Ubuntu 15.10: libksba8 1.3.3-1ubuntu0.15.10.1 Ubuntu 14.04 LTS: libksba8 1.3.0-3ubuntu0.14.04.2 Ubuntu 12.04 LTS: libksba8 1.2.0-2ubuntu0.2 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2982-1 CVE-2016-4353, CVE-2016-4354, CVE-2016-4355, CVE-2016-4356, CVE-2016-4574, CVE-2016-4579 Package Information: https://launchpad.net/ubuntu/+source/libksba/1.3.3-1ubuntu0.16.04.1 https://launchpad.net/ubuntu/+source/libksba/1.3.3-1ubuntu0.15.10.1 https://launchpad.net/ubuntu/+source/libksba/1.3.0-3ubuntu0.14.04.2 https://launchpad.net/ubuntu/+source/libksba/1.2.0-2ubuntu0.2 --