Test ID:	1.3.6.1.4.1.25623.1.0.842277
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-2672-1)
Summary:	The remote host is missing an update for the 'nss' package(s) announced via the USN-2672-1 advisory.
Description:	Summary: The remote host is missing an update for the 'nss' package(s) announced via the USN-2672-1 advisory. Vulnerability Insight: Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to skip the ServerKeyExchange message and remove the forward-secrecy property. (CVE-2015-2721) Watson Ladd discovered that NSS incorrectly handled Elliptical Curve Cryptography (ECC) multiplication. A remote attacker could possibly use this issue to spoof ECDSA signatures. (CVE-2015-2730) As a security improvement, this update modifies NSS behaviour to reject DH key sizes below 768 bits, preventing a possible downgrade attack. This update also refreshes the NSS package to version 3.19.2 which includes the latest CA certificate bundle. Affected Software/OS: 'nss' package(s) on Ubuntu 12.04, Ubuntu 14.04, Ubuntu 14.10, Ubuntu 15.04. Solution: Please install the updated package(s). CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2015-2721 BugTraq ID: 75541 http://www.securityfocus.com/bid/75541 BugTraq ID: 83398 http://www.securityfocus.com/bid/83398 BugTraq ID: 91787 http://www.securityfocus.com/bid/91787 Debian Security Information: DSA-3324 (Google Search) http://www.debian.org/security/2015/dsa-3324 Debian Security Information: DSA-3336 (Google Search) http://www.debian.org/security/2015/dsa-3336 https://security.gentoo.org/glsa/201512-10 https://security.gentoo.org/glsa/201701-46 https://smacktls.com RedHat Security Advisories: RHSA-2015:1185 http://rhn.redhat.com/errata/RHSA-2015-1185.html RedHat Security Advisories: RHSA-2015:1664 http://rhn.redhat.com/errata/RHSA-2015-1664.html http://www.securitytracker.com/id/1032783 http://www.securitytracker.com/id/1032784 SuSE Security Announcement: SUSE-SU-2015:1268 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html SuSE Security Announcement: SUSE-SU-2015:1269 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html SuSE Security Announcement: SUSE-SU-2015:1449 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html SuSE Security Announcement: openSUSE-SU-2015:1229 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html SuSE Security Announcement: openSUSE-SU-2015:1266 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html http://www.ubuntu.com/usn/USN-2656-1 http://www.ubuntu.com/usn/USN-2656-2 http://www.ubuntu.com/usn/USN-2672-1 http://www.ubuntu.com/usn/USN-2673-1 Common Vulnerability Exposure (CVE) ID: CVE-2015-2730 BugTraq ID: 83399 http://www.securityfocus.com/bid/83399 RedHat Security Advisories: RHSA-2015:1699 http://rhn.redhat.com/errata/RHSA-2015-1699.html
Copyright	Copyright (C) 2015 Greenbone AG

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