glsa-202012-23.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202012-23">
  <title>Apache Tomcat: Information disclosure</title>
  <synopsis>A vulnerability has been discovered in Apache Tomcat that allows
    for the disclosure of sensitive information.
  </synopsis>
  <product type="ebuild">tomcat</product>
  <announced>2020-12-24</announced>
  <revised count="1">2020-12-24</revised>
  <bug>758338</bug>
  <access>remote</access>
  <affected>
    <package name="www-servers/tomcat" auto="yes" arch="*">
      <unaffected range="ge" slot="8.5">8.5.60</unaffected>
      <unaffected range="ge" slot="9">9.0.40</unaffected>
      <vulnerable range="lt" slot="8.5">8.5.60</vulnerable>
      <vulnerable range="lt" slot="9">9.0.40</vulnerable>
    </package>
  </affected>
  <background>
    <p>Apache Tomcat is a Servlet-3.0/JSP-2.2 Container.</p>
  </background>
  <description>
    <p>It was discovered that Apache Tomcat could re-use an HTTP request header
      value from the previous stream received on an HTTP/2 connection for the
      request associated with the subsequent stream.
    </p>
  </description>
  <impact type="low">
    <p>A remote attacker, by sending well-timed HTTP/2 requests, could possibly
      obtain sensitive information.
    </p>
  </impact>
  <workaround>
    <p>Disable HTTP/2 support.</p>
  </workaround>
  <resolution>
    <p>All Apache Tomcat 8.5.x users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=www-servers/tomcat-8.5.60:8.5"
    </code>
    
    <p>All Apache Tomcat 9.x users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=www-servers/tomcat-9.0.40:9"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-17527">CVE-2020-17527</uri>
  </references>
  <metadata tag="requester" timestamp="2020-12-23T01:20:53Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2020-12-24T14:11:02Z">whissi</metadata>
</glsa>