CVE-2015-7692

Name: CVE-2015-7692
Creator: NVD / NIST
Published: 2017-08-07T20:29:00.573+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.34%

Last modified Jun 17, 2026

CVE-2015-7692 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.. EPSS estimates a 7.34% chance of exploitation in the next 30 days.

Description

The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

7.34%

93.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Ntp	Ntp	>= 4.2.0, < 4.2.8
Ntp	Ntp	>= 4.3.0, < 4.3.77
Ntp	Ntp	4.2.8
Oracle	Linux	6
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Netapp	Oncommand Performance Manager	All versions
Netapp	Oncommand Unified Manager	All versions
Netapp	Clustered Data Ontap	All versions
Netapp	Data Ontap	All versions
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	7.3
Redhat	Enterprise Linux Server Aus	7.4
Redhat	Enterprise Linux Server Aus	7.6
Redhat	Enterprise Linux Server Aus	7.7
Redhat	Enterprise Linux Server Eus	7.3
Redhat	Enterprise Linux Server Eus	7.4
Redhat	Enterprise Linux Server Eus	7.5
Redhat	Enterprise Linux Server Eus	7.6
Redhat	Enterprise Linux Server Eus	7.7
Redhat	Enterprise Linux Server Tus	7.3
Redhat	Enterprise Linux Server Tus	7.6
Redhat	Enterprise Linux Server Tus	7.7
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0

References

http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2899Vendor Advisory
http://www.debian.org/security/2015/dsa-3388Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
http://www.securityfocus.com/bid/77285Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033951Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274254Issue Tracking, Third Party Advisory, VDB Entry
https://security.gentoo.org/glsa/201607-15Third Party Advisory, VDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2899Vendor Advisory
http://www.debian.org/security/2015/dsa-3388Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
http://www.securityfocus.com/bid/77285Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1033951Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274254Issue Tracking, Third Party Advisory, VDB Entry
https://security.gentoo.org/glsa/201607-15Third Party Advisory, VDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/Third Party Advisory

Timeline

Published: Aug 7, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-7692?

How severe is CVE-2015-7692?

CVE-2015-7692 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.34% probability of exploitation in the next 30 days.

How do I fix CVE-2015-7692?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-7692?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST