glsa-202105-35.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-35">
  <title>OpenSSH: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in OpenSSH, the worst of
    which could allow a remote attacker to execute arbitrary code.
  </synopsis>
  <product type="ebuild">openssh</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>763048</bug>
  <bug>774090</bug>
  <access>local, remote</access>
  <affected>
    <package name="net-misc/openssh" auto="yes" arch="*">
      <unaffected range="ge">8.5_p1</unaffected>
      <vulnerable range="lt">8.5_p1</vulnerable>
    </package>
  </affected>
  <background>
    <p>OpenSSH is a complete SSH protocol implementation that includes SFTP
      client and server support.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in OpenSSH. Please review
      the CVE identifiers referenced below for details.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker, able to access the socket of the forwarding agent,
      might be able to execute arbitrary code with the privileges of the
      process or cause a Denial of Service condition.
      Furthermore, a remote attacker might conduct a man-in-the-middle attack
      targeting initial connection attempts where no host key for the server
      has been cached by client yet.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All OpenSSH users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-misc/openssh-8.5_p1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14145">CVE-2020-14145</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-28041">CVE-2021-28041</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-24T00:47:38Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T10:35:06Z">whissi</metadata>
</glsa>