Vulnerability Monitor

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CVE-2015-5194

The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to cause a denial of service (ntpd crash) via crafted logconfig commands.

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 13 products from fedoraproject, from suse, from suse and 10 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

2017-07-21T14:29:00.757

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 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-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	fedoraproject	fedora	21	Yes
Operating System	fedoraproject	fedora	22	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

References

http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=4c4fc141LwvcoGp-lLGhkAFp3ZvtrA Issue Tracking, Patch, Vendor 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.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html Third Party Advisory ([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 ([email protected])
http://www.securityfocus.com/bid/76475 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=1254542 Issue Tracking, Patch ([email protected])
https://github.com/ntp-project/ntp/commit/553f2fa65865c31c5e3c48812cfd46176cffdd27 Issue Tracking, Patch, Third Party Advisory ([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])
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=4c4fc141LwvcoGp-lLGhkAFp3ZvtrA Issue Tracking, Patch, Vendor 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.opensuse.org/opensuse-security-announce/2016-05/msg00048.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html Third Party Advisory (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 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76475 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=1254542 Issue Tracking, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ntp-project/ntp/commit/553f2fa65865c31c5e3c48812cfd46176cffdd27 Issue Tracking, Patch, Third Party Advisory (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)

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.