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.
References
Link Providers
http://aix.software.ibm.com/aix/efixes/security/sendmail_advisory2.asc cve-icon cve-icon
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery cve-icon cve-icon
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc cve-icon cve-icon
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04876402 cve-icon cve-icon
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04949778 cve-icon cve-icon
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10681 cve-icon cve-icon
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10727 cve-icon cve-icon
http://lists.apple.com/archives/security-announce/2015/Jun/msg00001.html cve-icon cve-icon
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html cve-icon cve-icon
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159314.html cve-icon cve-icon
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159351.html cve-icon cve-icon
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160117.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00001.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00003.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00005.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00039.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00040.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00046.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00047.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00001.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00031.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00032.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00037.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00039.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00040.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2015-07/msg00016.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2015-10/msg00011.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2016-02/msg00094.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-updates/2016-02/msg00097.html cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143506486712441&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143557934009303&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143558092609708&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143628304012255&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143637549705650&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143655800220052&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=143880121627664&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144043644216842&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144050121701297&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144060576831314&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144060606031437&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144061542602287&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144069189622016&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144102017024820&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144104533800819&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=144493176821532&w=2 cve-icon cve-icon
http://marc.info/?l=bugtraq&m=145409266329539&w=2 cve-icon cve-icon
http://openwall.com/lists/oss-security/2015/05/20/8 cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1072.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1185.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1197.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1228.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1229.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1230.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1241.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1242.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1243.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1485.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1486.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1488.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1526.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1544.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2015-1604.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2016-1624.html cve-icon cve-icon
http://rhn.redhat.com/errata/RHSA-2016-2056.html cve-icon cve-icon
http://support.apple.com/kb/HT204941 cve-icon cve-icon
http://support.apple.com/kb/HT204942 cve-icon cve-icon
http://support.citrix.com/article/CTX201114 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959111 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959195 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959325 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959453 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959481 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959517 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959530 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959539 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959636 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21959812 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21960191 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21961717 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21962455 cve-icon cve-icon
http://www-01.ibm.com/support/docview.wss?uid=swg21962739 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21958984 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21959132 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21960041 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21960194 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21960380 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21960418 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21962816 cve-icon cve-icon
http://www-304.ibm.com/support/docview.wss?uid=swg21967893 cve-icon cve-icon
http://www.debian.org/security/2015/dsa-3287 cve-icon cve-icon
http://www.debian.org/security/2015/dsa-3300 cve-icon cve-icon
http://www.debian.org/security/2015/dsa-3316 cve-icon cve-icon
http://www.debian.org/security/2015/dsa-3324 cve-icon cve-icon
http://www.debian.org/security/2015/dsa-3339 cve-icon cve-icon
http://www.debian.org/security/2016/dsa-3688 cve-icon cve-icon
http://www.fortiguard.com/advisory/2015-05-20-logjam-attack cve-icon cve-icon
http://www.mozilla.org/security/announce/2015/mfsa2015-70.html cve-icon cve-icon
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html cve-icon cve-icon
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html cve-icon cve-icon
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html cve-icon cve-icon
http://www.securityfocus.com/bid/74733 cve-icon cve-icon
http://www.securityfocus.com/bid/91787 cve-icon cve-icon
http://www.securitytracker.com/id/1032474 cve-icon cve-icon
http://www.securitytracker.com/id/1032475 cve-icon cve-icon
http://www.securitytracker.com/id/1032476 cve-icon cve-icon
http://www.securitytracker.com/id/1032637 cve-icon cve-icon
http://www.securitytracker.com/id/1032645 cve-icon cve-icon
http://www.securitytracker.com/id/1032647 cve-icon cve-icon
http://www.securitytracker.com/id/1032648 cve-icon cve-icon
http://www.securitytracker.com/id/1032649 cve-icon cve-icon
http://www.securitytracker.com/id/1032650 cve-icon cve-icon
http://www.securitytracker.com/id/1032651 cve-icon cve-icon
http://www.securitytracker.com/id/1032652 cve-icon cve-icon
http://www.securitytracker.com/id/1032653 cve-icon cve-icon
http://www.securitytracker.com/id/1032654 cve-icon cve-icon
http://www.securitytracker.com/id/1032655 cve-icon cve-icon
http://www.securitytracker.com/id/1032656 cve-icon cve-icon
http://www.securitytracker.com/id/1032688 cve-icon cve-icon
http://www.securitytracker.com/id/1032699 cve-icon cve-icon
http://www.securitytracker.com/id/1032702 cve-icon cve-icon
http://www.securitytracker.com/id/1032727 cve-icon cve-icon
http://www.securitytracker.com/id/1032759 cve-icon cve-icon
http://www.securitytracker.com/id/1032777 cve-icon cve-icon
http://www.securitytracker.com/id/1032778 cve-icon cve-icon
http://www.securitytracker.com/id/1032783 cve-icon cve-icon
http://www.securitytracker.com/id/1032784 cve-icon cve-icon
http://www.securitytracker.com/id/1032856 cve-icon cve-icon
http://www.securitytracker.com/id/1032864 cve-icon cve-icon
http://www.securitytracker.com/id/1032865 cve-icon cve-icon
http://www.securitytracker.com/id/1032871 cve-icon cve-icon
http://www.securitytracker.com/id/1032884 cve-icon cve-icon
http://www.securitytracker.com/id/1032910 cve-icon cve-icon
http://www.securitytracker.com/id/1032932 cve-icon cve-icon
http://www.securitytracker.com/id/1032960 cve-icon cve-icon
http://www.securitytracker.com/id/1033019 cve-icon cve-icon
http://www.securitytracker.com/id/1033064 cve-icon cve-icon
http://www.securitytracker.com/id/1033065 cve-icon cve-icon
http://www.securitytracker.com/id/1033067 cve-icon cve-icon
http://www.securitytracker.com/id/1033208 cve-icon cve-icon
http://www.securitytracker.com/id/1033209 cve-icon cve-icon
http://www.securitytracker.com/id/1033210 cve-icon cve-icon
http://www.securitytracker.com/id/1033222 cve-icon cve-icon
http://www.securitytracker.com/id/1033341 cve-icon cve-icon
http://www.securitytracker.com/id/1033385 cve-icon cve-icon
http://www.securitytracker.com/id/1033416 cve-icon cve-icon
http://www.securitytracker.com/id/1033430 cve-icon cve-icon
http://www.securitytracker.com/id/1033433 cve-icon cve-icon
http://www.securitytracker.com/id/1033513 cve-icon cve-icon
http://www.securitytracker.com/id/1033760 cve-icon cve-icon
http://www.securitytracker.com/id/1033891 cve-icon cve-icon
http://www.securitytracker.com/id/1033991 cve-icon cve-icon
http://www.securitytracker.com/id/1034087 cve-icon cve-icon
http://www.securitytracker.com/id/1034728 cve-icon cve-icon
http://www.securitytracker.com/id/1034884 cve-icon cve-icon
http://www.securitytracker.com/id/1036218 cve-icon cve-icon
http://www.securitytracker.com/id/1040630 cve-icon cve-icon
http://www.solarwinds.com/documentation/storage/storagemanager/docs/ReleaseNotes/releaseNotes.htm cve-icon cve-icon
http://www.ubuntu.com/usn/USN-2656-1 cve-icon cve-icon
http://www.ubuntu.com/usn/USN-2656-2 cve-icon cve-icon
http://www.ubuntu.com/usn/USN-2673-1 cve-icon cve-icon
http://www.ubuntu.com/usn/USN-2696-1 cve-icon cve-icon
http://www.ubuntu.com/usn/USN-2706-1 cve-icon cve-icon
https://access.redhat.com/articles/1456263 cve-icon
https://blog.cloudflare.com/logjam-the-latest-tls-vulnerability-explained/ cve-icon cve-icon
https://bto.bluecoat.com/security-advisory/sa98 cve-icon cve-icon
https://bugzilla.mozilla.org/show_bug.cgi?id=1138554 cve-icon cve-icon
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf cve-icon cve-icon
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19.1_release_notes cve-icon cve-icon
https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04718196 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04770140 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04772190 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04773119 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04773241 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04832246 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04918839 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04923929 cve-icon cve-icon
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04926789 cve-icon cve-icon
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04740527 cve-icon cve-icon
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04953655 cve-icon cve-icon
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763 cve-icon cve-icon
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05128722 cve-icon cve-icon
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05193083 cve-icon cve-icon
https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes cve-icon cve-icon
https://kc.mcafee.com/corporate/index?page=content&id=SB10122 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2015-4000 cve-icon
https://openssl.org/news/secadv/20150611.txt cve-icon cve-icon
https://puppet.com/security/cve/CVE-2015-4000 cve-icon cve-icon
https://security.gentoo.org/glsa/201506-02 cve-icon cve-icon
https://security.gentoo.org/glsa/201512-10 cve-icon cve-icon
https://security.gentoo.org/glsa/201603-11 cve-icon cve-icon
https://security.gentoo.org/glsa/201701-46 cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20150619-0001/ cve-icon cve-icon
https://support.citrix.com/article/CTX216642 cve-icon cve-icon
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03831en_us cve-icon cve-icon
https://weakdh.org/ cve-icon cve-icon cve-icon
https://weakdh.org/imperfect-forward-secrecy.pdf cve-icon cve-icon
https://www-304.ibm.com/support/docview.wss?uid=swg21959745 cve-icon cve-icon
https://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5098403 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2015-4000 cve-icon
https://www.openssl.org/blog/blog/2015/05/20/logjam-freak-upcoming-changes/ cve-icon cve-icon
https://www.openssl.org/news/secadv_20150611.txt cve-icon cve-icon
https://www.oracle.com/security-alerts/cpujan2021.html cve-icon cve-icon
https://www.suse.com/security/cve/CVE-2015-4000.html cve-icon cve-icon
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2015-05-21T00:00:00

Updated: 2024-08-06T06:04:02.725Z

Reserved: 2015-05-15T00:00:00

Link: CVE-2015-4000

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2015-05-21T00:59:00.087

Modified: 2023-02-09T16:15:28.840

Link: CVE-2015-4000

cve-icon Redhat

Severity : Moderate

Publid Date: 2015-05-20T00:00:00Z

Links: CVE-2015-4000 - Bugzilla