Test ID:	1.3.6.1.4.1.25623.1.0.843225
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-3339-1)
Summary:	The remote host is missing an update for the 'openvpn' package(s) announced via the USN-3339-1 advisory.
Description:	Summary: The remote host is missing an update for the 'openvpn' package(s) announced via the USN-3339-1 advisory. Vulnerability Insight: Karthikeyan Bhargavan and Gaetan Leurent discovered that 64-bit block ciphers are vulnerable to a birthday attack. A remote attacker could possibly use this issue to recover cleartext data. Fixing this issue requires a configuration change to switch to a different cipher. This update adds a warning to the log file when a 64-bit block cipher is in use. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6329) It was discovered that OpenVPN incorrectly handled rollover of packet ids. An authenticated remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-7479) Guido Vranken discovered that OpenVPN incorrectly handled certain malformed IPv6 packets. A remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2017-7508) Guido Vranken discovered that OpenVPN incorrectly handled an HTTP proxy with NTLM authentication. A remote attacker could use this issue to cause OpenVPN clients to crash, resulting in a denial of service, or possibly expose sensitive memory contents. (CVE-2017-7520) Guido Vranken discovered that OpenVPN incorrectly handled certain x509 extensions. A remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2017-7521) Affected Software/OS: 'openvpn' package(s) on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, Ubuntu 17.04. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2016-6329 1036695 http://www.securitytracker.com/id/1036695 92631 http://www.securityfocus.com/bid/92631 GLSA-201611-02 https://security.gentoo.org/glsa/201611-02 http://www-01.ibm.com/support/docview.wss?uid=nas8N1021697 http://www-01.ibm.com/support/docview.wss?uid=swg21991482 http://www-01.ibm.com/support/docview.wss?uid=swg21995039 https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf https://community.openvpn.net/openvpn/wiki/SWEET32 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05369403 https://sweet32.info/ Common Vulnerability Exposure (CVE) ID: CVE-2017-7479 BugTraq ID: 98443 http://www.securityfocus.com/bid/98443 Debian Security Information: DSA-3900 (Google Search) http://www.debian.org/security/2017/dsa-3900 http://www.securitytracker.com/id/1038473 Common Vulnerability Exposure (CVE) ID: CVE-2017-7508 BugTraq ID: 99230 http://www.securityfocus.com/bid/99230 http://www.securitytracker.com/id/1038768 Common Vulnerability Exposure (CVE) ID: CVE-2017-7520 Common Vulnerability Exposure (CVE) ID: CVE-2017-7521
Copyright	Copyright (C) 2017 Greenbone AG

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