VulnerabilityModified

CVE-2015-4000

LOW 3.7EPSS 99.9%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 99.9%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.1: 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 99.86% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-310, CWE-295
Affected: openssl/openssl · canonical/ubuntu linux · hp/hp-ux · ibm/content manager · oracle/jrockit · debian/debian linux · oracle/jdk · oracle/jre · suse/linux enterprise desktop · suse/linux enterprise server · suse/linux enterprise software development kit · suse/suse linux enterprise server · apple/iphone os · apple/mac os x · mozilla/network security services · oracle/sparc-opl service processor · apple/safari · google/chrome · microsoft/internet explorer · mozilla/firefox · +5 more
Source: cve@mitre.org

References

http://aix.software.ibm.com/aix/efixes/security/sendmail_advisory2.ascThird Party Advisory
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgeryThird Party Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.ascMailing List, Third Party Advisory
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04876402Third Party Advisory
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04949778Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10681Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10727Third Party Advisory
http://lists.apple.com/archives/security-announce/2015/Jun/msg00001.htmlMailing List, Third Party Advisory
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159314.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159351.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160117.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00001.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00003.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00039.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00046.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00047.htmlMailing List, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.