glsa-200903-14.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200903-14">
  <title>BIND: Incorrect signature verification</title>
  <synopsis>
    Incomplete verification of RSA and DSA certificates might lead to spoofed
    records authenticated using DNSSEC.
  </synopsis>
  <product type="ebuild">bind</product>
  <announced>2009-03-09</announced>
  <revised count="01">2009-03-09</revised>
  <bug>254134</bug>
  <bug>257949</bug>
  <access>remote</access>
  <affected>
    <package name="net-dns/bind" auto="yes" arch="*">
      <unaffected range="ge">9.4.3_p1</unaffected>
      <vulnerable range="lt">9.4.3_p1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ISC BIND is the Internet Systems Consortium implementation of the
    Domain Name System (DNS) protocol.
    </p>
  </background>
  <description>
    <p>
    BIND does not properly check the return value from the OpenSSL
    functions to verify DSA (CVE-2009-0025) and RSA (CVE-2009-0265)
    certificates.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could bypass validation of the certificate chain to
    spoof DNSSEC-authenticated records.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All BIND users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-dns/bind-9.4.3_p1"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0025">CVE-2009-0025</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0265">CVE-2009-0265</uri>
  </references>
  <metadata tag="requester" timestamp="2009-01-11T17:55:00Z">
    p-y
  </metadata>
  <metadata tag="submitter" timestamp="2009-03-09T10:41:33Z">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="2009-03-09T10:41:40Z">
    rbu
  </metadata>
</glsa>