glsa-201808-02.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201808-02">
  <title>LinuX Containers user space utilities: Arbitrary file read</title>
  <synopsis>A vulnerability has been found in LXC which may allow for arbitrary
    file access (read-only).
  </synopsis>
  <product type="ebuild">lxc</product>
  <announced>2018-08-22</announced>
  <revised count="3">2018-10-17</revised>
  <bug>662780</bug>
  <access>local</access>
  <affected>
    <package name="app-emulation/lxc" auto="yes" arch="*">
      <unaffected range="ge">2.1.1-r1</unaffected>
      <vulnerable range="lt">2.1.1-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>LinuX Containers user space utilities.</p>
  </background>
  <description>
    <p>lxc-user-nic when asked to delete a network interface will
      unconditionally open a user provided path. This code path may be used by
      an unprivileged user to check for the existence of a path which they
      wouldn’t otherwise be able to reach.
    </p>
  </description>
  <impact type="low">
    <p>A local unprivileged user could use this flaw to access arbitrary files,
      including special device files.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All LXC users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-emulation/lxc-2.1.1-r1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-6556">CVE-2018-6556</uri>
  </references>
  <metadata tag="requester" timestamp="2018-08-13T17:16:02Z">irishluck83</metadata>
  <metadata tag="submitter" timestamp="2018-10-17T23:09:04Z">Zlogene</metadata>
</glsa>