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Fencer Intel
high 7.5

CVE-2015-5219 json

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which…

published 2017-07-21 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5216

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.1%
EPSS 6.1% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

Patch / fix

  • ntp Debian 11 1:4.2.8p3+dfsg-1

debian advisories DEBIAN-CVE-2015-5219

  • ntp Ubuntu 14.04 LTS 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5

ubuntu advisories UBUNTU-CVE-2015-5219

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 7 4.2.6p5-25.el7
  • sntp RHEL 7 4.2.6p5-25.el7
  • ntpdate RHEL 7 4.2.6p5-25.el7
  • ntp-perl RHEL 7 4.2.6p5-25.el7
  • ntp RHEL 6 4.2.6p5-10.el6
  • ntpdate RHEL 6 4.2.6p5-10.el6
  • ntp-perl RHEL 6 4.2.6p5-10.el6

red hat advisories RHSA-2016:2583RHSA-2016:0780

  • ntp SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLES 11 SP2-LTSS +4 more 4.2.8p9-48.9.1
  • ntp SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +4 more 4.2.8p9-55.1
  • ntp SLES for SAP 11 SP4, SLES 11 SP4 4.2.8p9-57.2
  • ntp SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLES 11 SP2-LTSS +3 more 4.2.8p6-41.1
  • ntp SLES for SAP 12, SLES 12-LTSS 4.2.8p9-46.18.1
  • yast2-ntp-client SLES 11 SP2-LTSS 2.17.14.1-1.12.1

suse advisories SUSE-SU-2017:0255-1SUSE-SU-2016:3195-1SUSE-SU-2016:3196-1SUSE-SU-2016:3193-1SUSE-SU-2016:1311-1

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-2015-5219 updated cvss 3.3

ntp: infinite loop in sntp processing crafted packet

  • Red Hat Enterprise Linux 5 ntp
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) ntp 4.2.6p5-25.el7, ntpdate 4.2.6p5-25.el7 Red Hat Enterprise Linux Client Optional (v. 7) sntp 4.2.6p5-25.el7, ntp-perl 4.2.6p5-25.el7 Red Hat Enterprise Linux ComputeNode (v. 7) ntp 4.2.6p5-25.el7, ntpdate 4.2.6p5-25.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) sntp 4.2.6p5-25.el7, ntp-perl 4.2.6p5-25.el7
    fixed: vendor fix RHSA-2016:2583
  • Red Hat Enterprise Linux Desktop (v. 6) ntp 4.2.6p5-10.el6, ntpdate 4.2.6p5-10.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-perl 4.2.6p5-10.el6 Red Hat Enterprise Linux HPC Node (v. 6) ntp 4.2.6p5-10.el6, ntpdate 4.2.6p5-10.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-perl 4.2.6p5-10.el6 Red Hat Enterprise Linux Server (v. 6) ntp 4.2.6p5-10.el6, ntpdate 4.2.6p5-10.el6
    fixed: vendor fix RHSA-2016:0780
  • Red Hat Enterprise Linux Server (v. 7) ntp 4.2.6p5-25.el7, ntpdate 4.2.6p5-25.el7
    fixed: vendor fix RHSA-2016:2583
  • Red Hat Enterprise Linux Server Optional (v. 6) ntp-perl 4.2.6p5-10.el6
    fixed: vendor fix RHSA-2016:0780
  • Red Hat Enterprise Linux Server Optional (v. 7) sntp 4.2.6p5-25.el7, ntp-perl 4.2.6p5-25.el7
    fixed: vendor fix RHSA-2016:2583
  • Red Hat Enterprise Linux Workstation (v. 6) ntp 4.2.6p5-10.el6, ntpdate 4.2.6p5-10.el6
    fixed: vendor fix RHSA-2016:0780
  • Red Hat Enterprise Linux Workstation (v. 7) ntp 4.2.6p5-25.el7, ntpdate 4.2.6p5-25.el7
    fixed: vendor fix RHSA-2016:2583
show 2 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-perl 4.2.6p5-10.el6
    fixed: vendor fix RHSA-2016:0780
  • Red Hat Enterprise Linux Workstation Optional (v. 7) sntp 4.2.6p5-25.el7, ntp-perl 4.2.6p5-25.el7
    fixed: vendor fix RHSA-2016:2583

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-21-103-11 updated cvss 7.5

Siemens TIM 4R-IE Devices

  • Siemens SIPLUS NET TIM 4R-IE (6AG1800-4BA00-7AA0) Siemens SIPLUS NET TIM 4R-IE DNP3 (6AG1803-4BA00-7AA0) Siemens TIM 4R-IE (6NH7800-4BA00) Siemens TIM 4R-IE DNP3 (6NH7803-4BA00-0AA0)
    affected: workaround, no fix planned

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

6.09% chance of exploitation in the next 30 days, higher than 93% 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-704 Incorrect Type Conversion or Cast

References

Sources

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.