<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-33">
  <title>containerd: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in containerd, the worst
    of which could result in privilege escalation.
  </synopsis>
  <product type="ebuild">containerd</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>758137</bug>
  <bug>775329</bug>
  <access>local</access>
  <affected>
    <package name="app-emulation/containerd" auto="yes" arch="*">
      <unaffected range="ge">1.4.4</unaffected>
      <vulnerable range="lt">1.4.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>Containerd is a daemon with an API and a command line client, to manage
      containers on one machine. It uses runC to run containers according to
      the OCI specification.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in containerd. Please
      review the CVE identifiers referenced below for details.
    </p>
  </description>
  <impact type="high">
    <p>A local attacker, able to run a malicious container in the same network
      namespace as the shim, could possibly escalate privileges. Furthermore,
      an attacker could disclose sensitive information.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All containerd users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-emulation/containerd-1.4.4"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-15257">CVE-2020-15257</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-21334">CVE-2021-21334</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-25T19:40:34Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T10:13:09Z">whissi</metadata>
</glsa>
