Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2015-5300

The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).

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 opensuse 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

2017-07-21T14:29:00.927

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-361

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
Application	suse	linux_enterprise_debuginfo	11	Yes
Operating System	opensuse	leap	42.1	Yes
Operating System	opensuse	opensuse	13.2	Yes
Operating System	suse	linux_enterprise_desktop	12	Yes
Operating System	suse	linux_enterprise_desktop	12	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	linux_enterprise_server	11	Yes
Operating System	suse	linux_enterprise_server	12	Yes
Operating System	suse	linux_enterprise_software_development_kit	12	Yes
Operating System	suse	linux_enterprise_software_development_kit	12	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	suse	suse_linux_enterprise_server	12	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_hpc_node_eus	7.1	Yes
Operating System	redhat	enterprise_linux_server	6.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_eus	6.7.z	Yes
Operating System	redhat	enterprise_linux_server_eus	7.1	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	≤ 4.2.8	Yes

References

http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.asc Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html 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/2016-February/177507.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.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://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1930.html Third Party Advisory ([email protected])
http://seclists.org/bugtraq/2016/Feb/164 Mailing List, Third Party Advisory ([email protected])
http://support.ntp.org/bin/view/Main/NtpBug2956 Issue Tracking, Patch, Vendor Advisory ([email protected])
http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_Securit Issue Tracking, Patch, Vendor Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3388 Third Party Advisory ([email protected])
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/77312 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1034670 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2783-1 Third Party Advisory ([email protected])
https://bto.bluecoat.com/security-advisory/sa113 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1271076 Issue Tracking ([email protected])
https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01 Third Party Advisory, US Government Resource ([email protected])
https://security.netapp.com/advisory/ntap-20171004-0001/ ([email protected])
https://support.citrix.com/article/CTX220112 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=isg3T1023885 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=isg3T1024073 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=nas8N1021264 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=ssg1S1005821 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21979393 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21980676 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21983501 Third Party Advisory ([email protected])
https://www-01.ibm.com/support/docview.wss?uid=swg21983506 Third Party Advisory ([email protected])
https://www.cs.bu.edu/~goldbe/NTPattack.html Third Party Advisory ([email protected])
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.asc Third Party Advisory ([email protected])
https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099428 Third Party Advisory ([email protected])
https://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html Third Party Advisory ([email protected])
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html Third Party Advisory ([email protected])
http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.asc Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html 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/2016-February/177507.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.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://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1930.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/bugtraq/2016/Feb/164 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.ntp.org/bin/view/Main/NtpBug2956 Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_Securit Issue Tracking, Patch, 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.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/77312 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1034670 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://bto.bluecoat.com/security-advisory/sa113 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1271076 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20171004-0001/ (af854a3a-2127-422b-91ae-364da2661108)
https://support.citrix.com/article/CTX220112 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=isg3T1023885 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=isg3T1024073 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=nas8N1021264 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=ssg1S1005821 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21979393 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21980676 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21983501 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www-01.ibm.com/support/docview.wss?uid=swg21983506 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.cs.bu.edu/~goldbe/NTPattack.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.asc Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099428 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html 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.