Vulnerability Monitor

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CVE-2015-5146

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows remote authenticated users with knowledge of the configuration password and access to a computer entrusted to perform remote configuration to cause a denial of service (service crash) via a NULL byte in a crafted configuration directive packet.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 3 products from fedoraproject, from debian, from ntp 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

2017-08-24T20:29:00.313

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:N/A:P

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

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

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
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes
Application	ntp	ntp	≤ 4.2.8	Yes

References

http://bugs.ntp.org/show_bug.cgi?id=2853 Issue Tracking, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html Third Party Advisory ([email protected])
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu Vendor Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/75589 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1034168 Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1238136 Issue Tracking, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201509-01 Mitigation, Third Party Advisory, VDB Entry ([email protected])
https://security.netapp.com/advisory/ntap-20180731-0003/ ([email protected])
http://bugs.ntp.org/show_bug.cgi?id=2853 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/75589 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034168 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1238136 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201509-01 Mitigation, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20180731-0003/ (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.