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