Vulnerability Monitor

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CVE-2015-5219

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 20 products from fedoraproject, from suse, from suse and 17 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-07-21T14:29:00.867

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-704

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	fedoraproject	fedora	21	Yes
Operating System	fedoraproject	fedora	22	Yes
Operating System	fedoraproject	fedora	23	Yes
Application	suse	linux_enterprise_debuginfo	11	Yes
Application	suse	linux_enterprise_debuginfo	11	Yes
Operating System	suse	linux_enterprise_server	10	Yes
Operating System	suse	linux_enterprise_server	11	Yes
Operating System	suse	linux_enterprise_server	11	Yes
Operating System	suse	manager	2.1	Yes
Operating System	suse	manager_proxy	2.1	Yes
Operating System	suse	openstack_cloud	5	Yes
Operating System	redhat	enterprise_linux_desktop	6.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_hpc_node	6.0	Yes
Operating System	redhat	enterprise_linux_hpc_node	7.0	Yes
Operating System	redhat	enterprise_linux_server	6.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_workstation	6.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.04	Yes
Operating System	canonical	ubuntu_linux	15.10	Yes
Application	ntp	ntp	≤ 4.2.7	Yes
Operating System	novell	leap	42.2	Yes
Operating System	opensuse	leap	42.1	Yes
Operating System	siemens	tim_4r-ie_firmware	*	Yes
Hardware	siemens	tim_4r-ie	-	No
Operating System	siemens	tim_4r-id_dnp3_firmware	*	Yes
Hardware	siemens	tim_4r-id_dnp3	-	No
Operating System	oracle	linux	6	Yes

References

http://aix.software.ibm.com/aix/efixes/security/ntp_advisory4.asc Third Party Advisory ([email protected])
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=51786731Gr4-NOrTBC_a_uXO4wuGhg Issue Tracking, Patch, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html Mailing List, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html Mailing List, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Broken Link ([email protected])
http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html Broken Link ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0780.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-2583.html Third Party Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/08/25/3 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/76473 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2783-1 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1255118 Issue Tracking ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf Third Party Advisory ([email protected])
https://github.com/ntp-project/ntp/commit/5f295cd05c3c136d39f5b3e500a2d781bdbb59c8 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 Third Party Advisory, US Government Resource ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=isg3T1024157 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21985122 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21986956 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21988706 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21989542 Third Party Advisory ([email protected])
https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099409 Third Party Advisory ([email protected])
http://aix.software.ibm.com/aix/efixes/security/ntp_advisory4.asc Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=51786731Gr4-NOrTBC_a_uXO4wuGhg Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0780.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-2583.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/08/25/3 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76473 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2783-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1255118 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ntp-project/ntp/commit/5f295cd05c3c136d39f5b3e500a2d781bdbb59c8 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=isg3T1024157 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21985122 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21986956 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21988706 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21989542 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099409 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For fedoraproject's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.