Stay Secure with the Latest Linux Advisories

security advisoryGentooauthentication issue

Gentoo: 201701-70 Normal: Firewalld Auth Methods Risk Alert

A vulnerability in Firewalld allows firewall configurations to be modified by unauthenticated users.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201701-70 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Firewalld: Improper authentication methods Date: January 29, 2017 Bugs: #591458 ID: 201701-70 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A vulnerability in Firewalld allows firewall configurations to be modified by unauthenticated users. Background ========= Firewalld provides a dynamically managed firewall with support for network/firewall zones to define the trust level of network connections or interfaces. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-firewall/firewalld < 0.4.3.3 > = 0.4.3.3 Description ========== A flaw in Firewalld allows any locally logged in user to tamper with or change firewall settings. This is due to how Firewalld handles authentication via polkit which is not properly applied to 5 particular functions to include: addPassthrough, removePassthrough, addEntry, removeEntry, and setEntries. Impact ===== A local attacker could tamper or change firewall settings leading to the additional exposure of systems to include unauthorized remote access. Workaround ========= There is no known workaround at this time. Resolution ========= All Firewalld users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-firewall/firewalld-0.4.3.3" References ========= [ 1 ]CVE-2016-5410 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-5410 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201701-70 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2017 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5/ . Critical security flaw in Firewalld on Gentoo permits unauthorized access to alter firewall configurations. Immediate patching advised!. Gentoo Security Advisory, Firewalld Risk, Authentication Issue. . LinuxSecurity.com Team

Jan 29, 2017 Gentoo