glsa-201701-70.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201701-70">
  <title>Firewalld: Improper authentication methods</title>
  <synopsis>A vulnerability in Firewalld allows firewall configurations to be
    modified by unauthenticated users.
  </synopsis>
  <product type="ebuild">firewalld</product>
  <announced>2017-01-29</announced>
  <revised>2017-01-29: 1</revised>
  <bug>591458</bug>
  <access>local</access>
  <affected>
    <package name="net-firewall/firewalld" auto="yes" arch="*">
      <unaffected range="ge">0.4.3.3</unaffected>
      <vulnerable range="lt">0.4.3.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>Firewalld provides a dynamically managed firewall with support for
      network/firewall zones to define the trust level of network connections
      or interfaces.
    </p>
  </background>
  <description>
    <p>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.
    </p>
  </description>
  <impact type="normal">
    <p>A local attacker could tamper or change firewall settings leading to the
      additional exposure of systems to include unauthorized remote access.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Firewalld users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-firewall/firewalld-0.4.3.3"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-5410">CVE-2016-5410</uri>
  </references>
  <metadata tag="requester" timestamp="2017-01-04T03:14:04Z">b-man</metadata>
  <metadata tag="submitter" timestamp="2017-01-29T16:21:27Z">b-man</metadata>
</glsa>