CVE-2015-7704 in the critical feed json
The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of craf…
published 2017-08-07 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-7605
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.7%
- EPSS 10.7% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.
Patch / fix
- ntp ntp 4.2.8, 4.3.77
- mcafee enterprise_security_manager 10.4.0, 11.2.0
- ntp Debian 11 1:4.2.8p4+dfsg-3
debian advisories DEBIAN-CVE-2015-7704
- ntp Ubuntu 14.04 LTS 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
ubuntu advisories UBUNTU-CVE-2015-7704
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- ntp RHEL 6 4.2.6p5-5.el6_7.2
- ntp RHEL 7 4.2.6p5-19.el7_1.3
- ntp RHEL 7 4.2.6p5-19.ael7b_1.3
- sntp RHEL 7 4.2.6p5-19.el7_1.3
- sntp RHEL 7 4.2.6p5-19.ael7b_1.3
- ntpdate RHEL 6 4.2.6p5-5.el6_7.2
- ntpdate RHEL 7 4.2.6p5-19.el7_1.3
- ntpdate RHEL 7 4.2.6p5-19.ael7b_1.3
red hat advisories RHSA-2015:2520RHSA-2015:1930
- ntp SLES for SAP 12, SLES 12, SLED 12 4.2.8p8-46.8.1
- ntp SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLES 11 SP2-LTSS +3 more 4.2.8p7-44.1
- ntp SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLES 11 SP2-LTSS +3 more 4.2.8p6-41.1
- ntp SLES 12 SP1, SLES 11 SP4, SLED 12 SP1 +2 more 4.2.8p7-11.1
- ntp SLES for SAP 12, SLES 12, SLED 12 4.2.8p6-46.5.2
- yast2-ntp-client SLES for SAP 12, SLES 12, SLED 12 +1 more 3.1.12.4-8.2
- ntp SLES for SAP 11 SP4, SLES 11 SP4, SLED 11 SP4 4.2.8p4-5.1
- yast2-ntp-client SLES 11 SP2-LTSS 2.17.14.1-1.12.1
suse advisories SUSE-SU-2016:1568-1SUSE-SU-2016:1471-1SUSE-SU-2016:1311-1SUSE-SU-2016:1291-1SUSE-SU-2016:1278-1SUSE-SU-2016:1247-1
- ntp openSUSE Tumbleweed 4.2.8p9-1.1
opensuse advisories openSUSE-SU-2024:10181-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2015-7704 updated cvss 6.4
ntp: disabling synchronization via crafted KoD packet
-
Red Hat Enterprise Linux Client (v. 7) ntp 4.2.6p5-19.el7_1.3, ntpdate 4.2.6p5-19.el7_1.3 Red Hat Enterprise Linux Client Optional (v. 7) sntp 4.2.6p5-19.el7_1.3, ntp-perl 4.2.6p5-19.el7_1.3fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5) ntp 4.2.6p5-2.el6_5.1, ntp-perl 4.2.6p5-2.el6_5.1fixed: vendor fix RHSA-2015:2520
-
Red Hat Enterprise Linux ComputeNode (v. 7) ntp 4.2.6p5-19.el7_1.3, ntpdate 4.2.6p5-19.el7_1.3 Red Hat Enterprise Linux ComputeNode Optional (v. 7) sntp 4.2.6p5-19.el7_1.3, ntp-perl 4.2.6p5-19.el7_1.3 Red Hat Enterprise Linux Desktop (v. 6) ntp 4.2.6p5-5.el6_7.2, ntpdate 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-perl 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux HPC Node (v. 6) ntp 4.2.6p5-5.el6_7.2, ntpdate 4.2.6p5-5.el6_7.2fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux HPC Node EUS (v. 6.5) ntp 4.2.6p5-2.el6_5.1, ntpdate 4.2.6p5-2.el6_5.1 Red Hat Enterprise Linux HPC Node EUS (v. 6.6) ntp 4.2.6p5-3.el6_6.1, ntpdate 4.2.6p5-3.el6_6.1fixed: vendor fix RHSA-2015:2520
-
Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-perl 4.2.6p5-5.el6_7.2fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) ntp-perl 4.2.6p5-3.el6_6.1fixed: vendor fix RHSA-2015:2520
-
Red Hat Enterprise Linux Server (v. 6) ntp 4.2.6p5-5.el6_7.2, ntpdate 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux Server (v. 7) ntp 4.2.6p5-19.el7_1.3, ntp 4.2.6p5-19.ael7b_1.3, ntpdate 4.2.6p5-19.el7_1.3, ntpdate 4.2.6p5-19.ael7b_1.3fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux Server EUS (v. 6.5) ntp 4.2.6p5-2.el6_5.1, ntpdate 4.2.6p5-2.el6_5.1 Red Hat Enterprise Linux Server EUS (v. 6.6) ntp 4.2.6p5-3.el6_6.1, ntpdate 4.2.6p5-3.el6_6.1fixed: vendor fix RHSA-2015:2520
show 4 moreshow fewer
-
Red Hat Enterprise Linux Server Optional (v. 6) ntp-perl 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux Server Optional (v. 7) sntp 4.2.6p5-19.el7_1.3, sntp 4.2.6p5-19.ael7b_1.3, ntp-perl 4.2.6p5-19.el7_1.3, ntp-perl 4.2.6p5-19.ael7b_1.3fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux Server Optional EUS (v. 6.5) ntp 4.2.6p5-2.el6_5.1, ntp-perl 4.2.6p5-2.el6_5.1 Red Hat Enterprise Linux Server Optional EUS (v. 6.6) ntp-perl 4.2.6p5-3.el6_6.1fixed: vendor fix RHSA-2015:2520
-
Red Hat Enterprise Linux Workstation (v. 6) ntp 4.2.6p5-5.el6_7.2, ntpdate 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux Workstation (v. 7) ntp 4.2.6p5-19.el7_1.3, ntpdate 4.2.6p5-19.el7_1.3 Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-perl 4.2.6p5-5.el6_7.2 Red Hat Enterprise Linux Workstation Optional (v. 7) sntp 4.2.6p5-19.el7_1.3, ntp-perl 4.2.6p5-19.el7_1.3fixed: vendor fix RHSA-2015:1930
-
Red Hat Enterprise Linux 5 ntpnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
cisa ICSA-15-356-01 updated cvss 5.3
Siemens RUGGEDCOM ROX-based Devices NTP Vulnerabilities
-
Siemens ROX II <2.9.0 Siemens RUGGEDCOM ROX Iaffected: mitigation “Update to the latest version. (http://www.siemens.com/automation/support-request)”
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
10.66% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
rhn.redhat.com
/errata/RHSA-2015-1930.html
vendor-advisory, third-party-advisory
-
debian.org
/security/2015/dsa-3388
vendor-advisory, third-party-advisory
-
rhn.redhat.com
/errata/RHSA-2015-2520.html
vendor-advisory, third-party-advisory
-
security.gentoo.org
/glsa/201607-15
vendor-advisory, third-party-advisory, vdb-entry
-
bugs.ntp.org
/show_bug.cgi?id=2901
issue-tracking, vendor-advisory
-
support.ntp.org
/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit
release-notes, vendor-advisory
-
support.ntp.org
/bin/view/Main/NtpBug2901
vendor-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=1271070
issue-tracking, third-party-advisory, vdb-entry
-
securityfocus.com
/bid/77280
vdb-entry, third-party-advisory
-
kb.cert.org
/vuls/id/718152
third-party-advisory, us-government-resource
-
support.citrix.com
/article/CTX220112
third-party-advisory
-
oracle.com
/technetwork/topics/security/bulletinapr2016-2952098.html
third-party-advisory
-
security.netapp.com
/advisory/ntap-20171004-0002/
third-party-advisory
-
securitytracker.com
/id/1033951
vdb-entry, third-party-advisory
-
cs.bu.edu
/~goldbe/NTPattack.html
third-party-advisory
-
eprint.iacr.org
/2015/1020.pdf
technical-description, third-party-advisory
-
h20566.www2.hpe.com
/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
third-party-advisory, vdb-entry
-
security.netapp.com
/advisory/ntap-20171004-0001/
third-party-advisory
-
kc.mcafee.com
/corporate/index?page=content&id=SB10284
third-party-advisory
- arista.com /en/support/advisories-notices/security-advisories/1212-security-advisory-0016
Sources
- CVE List CVE-2015-7704
- NVD CVE-2015-7704
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.