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CVE details

CVE-2015-4000

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

Score
3.7 low
Published
2015-05-21
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
security/openssl-unsafeopenssl-unsafe1.0.2.20170706unaddressedbrnrd@FreeBSD.org

VuXML

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>openssl-unsafe</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is
	enabled on a server but not on a client, does not properly convey a
	DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct
	cipher-downgrade attacks by rewriting a ClientHello with DHE replaced
	by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT
	replaced by DHE, aka the "Logjam" issue.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2015-4000</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2015-4000</url>
    </references>
    <dates>
      <discovery>2015-05-21</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>