glsa-202101-04.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202101-04">
  <title>Mozilla Firefox: Remote code execution</title>
  <synopsis>A use-after-free in Mozilla Firefox's SCTP handling may allow
    remote code execution.
  </synopsis>
  <product type="ebuild">firefox,thunderbird</product>
  <announced>2021-01-10</announced>
  <revised count="1">2021-01-10</revised>
  <bug>764161</bug>
  <access>remote</access>
  <affected>
    <package name="www-client/firefox" auto="yes" arch="*">
      <unaffected range="ge" slot="0/esr78">78.6.1</unaffected>
      <unaffected range="ge">84.0.2</unaffected>
      <vulnerable range="lt">84.0.2</vulnerable>
    </package>
    <package name="www-client/firefox-bin" auto="yes" arch="*">
      <unaffected range="ge" slot="0/esr78">78.6.1</unaffected>
      <unaffected range="ge">84.0.2</unaffected>
      <vulnerable range="lt">84.0.2</vulnerable>
    </package>
  </affected>
  <background>
    <p>Mozilla Firefox is a popular open-source web browser from the Mozilla
      project.
    </p>
  </background>
  <description>
    <p>A use-after-free bug was discovered in Mozilla Firefox’s handling of
      SCTP.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could possibly execute arbitrary code with the
      privileges of the process, or cause a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Firefox ESR users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose
      "&gt;=www-client/firefox-78.6.1:0/esr78"
    </code>
    
    <p>All Firefox ESR binary users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose
      "&gt;=www-client/firefox-bin-78.6.1:0/esr78"
    </code>
    
    <p>All Firefox users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=www-client/firefox-84.0.2"
    </code>
    
    <p>All Firefox binary users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=www-client/firefox-bin-84.0.2"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-16044">CVE-2020-16044</uri>
    <uri link="https://www.mozilla.org/en-US/security/advisories/mfsa2021-01/">
      MFSA-2021-01
    </uri>
  </references>
  <metadata tag="requester" timestamp="2021-01-09T16:49:31Z">sam_c</metadata>
  <metadata tag="submitter" timestamp="2021-01-10T09:20:31Z">sam_c</metadata>
</glsa>