glsa-201909-08.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201909-08">
  <title>D-Bus: Authentication bypass</title>
  <synopsis>An authentication bypass was discovered in D-Bus.</synopsis>
  <product type="ebuild">dbus</product>
  <announced>2019-09-08</announced>
  <revised count="1">2019-09-08</revised>
  <bug>687900</bug>
  <access>local</access>
  <affected>
    <package name="sys-apps/dbus" auto="yes" arch="*">
      <unaffected range="ge">1.12.16</unaffected>
      <vulnerable range="lt">1.12.16</vulnerable>
    </package>
  </affected>
  <background>
    <p>D-Bus is a message bus system which processes can use to talk to each
      other.
    </p>
  </background>
  <description>
    <p>It was discovered that a local attacker could manipulate symbolic links
      in their own home directory to bypass authentication and connect to a
      DBusServer with elevated privileges.
    </p>
  </description>
  <impact type="normal">
    <p>A local attacker can bypass authentication mechanisms and elevate
      privileges.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All D-Bus users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-apps/dbus-1.12.16"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-12749">CVE-2019-12749</uri>
  </references>
  <metadata tag="requester" timestamp="2019-09-07T17:12:55Z">b-man</metadata>
  <metadata tag="submitter" timestamp="2019-09-08T17:40:45Z">b-man</metadata>
</glsa>