glsa-202101-17.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202101-17">
  <title>Dnsmasq: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in Dnsmasq, the worst of
    which may allow remote attackers to execute arbitrary code.
  </synopsis>
  <product type="ebuild">dnsmasq</product>
  <announced>2021-01-22</announced>
  <revised count="1">2021-01-22</revised>
  <bug>766126</bug>
  <access>local, remote</access>
  <affected>
    <package name="net-dns/dnsmasq" auto="yes" arch="*">
      <unaffected range="ge">2.83</unaffected>
      <vulnerable range="lt">2.83</vulnerable>
    </package>
  </affected>
  <background>
    <p>Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP
      server.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in Dnsmasq. Please review
      the references below for details.
    </p>
  </description>
  <impact type="normal">
    <p>An attacker, by sending specially crafted DNS replies, could possibly
      execute arbitrary code with the privileges of the process, perform a
      cache poisoning attack or cause a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Dnsmasq users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-dns/dnsmasq-2.83"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25681">CVE-2020-25681</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25682">CVE-2020-25682</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25683">CVE-2020-25683</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25684">CVE-2020-25684</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25685">CVE-2020-25685</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25686">CVE-2020-25686</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25687">CVE-2020-25687</uri>
  </references>
  <metadata tag="requester" timestamp="2021-01-21T20:58:48Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-01-22T17:55:39Z">whissi</metadata>
</glsa>