glsa-202107-25.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202107-25">
  <title>Tor: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in Tor, the worst of which
    could result in a Denial of Service condition.
  </synopsis>
  <product type="ebuild">tor</product>
  <announced>2021-07-10</announced>
  <revised count="1">2021-07-10</revised>
  <bug>776586</bug>
  <bug>795969</bug>
  <access>remote</access>
  <affected>
    <package name="net-vpn/tor" auto="yes" arch="*">
      <unaffected range="ge">0.4.6.5</unaffected>
      <unaffected range="ge">0.4.5.9</unaffected>
      <unaffected range="ge">0.4.4.9</unaffected>
      <vulnerable range="lt">0.4.6.5</vulnerable>
    </package>
  </affected>
  <background>
    <p>Tor is an implementation of second generation Onion Routing, a
      connection-oriented anonymizing communication service.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in Tor. Please review the
      CVE identifiers referenced below for details.
    </p>
  </description>
  <impact type="normal">
    <p>Please review the referenced CVE identifiers for details.</p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Tor 0.4.6.x users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-vpn/tor-0.4.6.5"
    </code>
    
    <p>All Tor 0.4.5.x users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-vpn/tor-0.4.5.9"
    </code>
    
    <p>All Tor 0.4.4.x users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-vpn/tor-0.4.4.9"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-28089">CVE-2021-28089</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-28090">CVE-2021-28090</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-34548">CVE-2021-34548</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-34549">CVE-2021-34549</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-34550">CVE-2021-34550</uri>
  </references>
  <metadata tag="requester" timestamp="2021-07-10T00:37:16Z">sam_c</metadata>
  <metadata tag="submitter" timestamp="2021-07-10T02:53:55Z">sam_c</metadata>
</glsa>