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).

• CWE-361

• http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.ascThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1930.htmlThird Party Advisory
• http://seclists.org/bugtraq/2016/Feb/164Mailing List, Third Party Advisory
• http://support.ntp.org/bin/view/Main/NtpBug2956Issue Tracking, Patch, Vendor Advisory
• http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_SecuritIssue Tracking, Patch, Vendor Advisory
• http://www.debian.org/security/2015/dsa-3388Third Party Advisory
• http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlThird Party Advisory
• http://www.securityfocus.com/bid/77312Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1034670Third Party Advisory, VDB Entry
• http://www.ubuntu.com/usn/USN-2783-1Third Party Advisory
• https://bto.bluecoat.com/security-advisory/sa113Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1271076Issue Tracking
• https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01Third Party Advisory, US Government Resource
• https://security.netapp.com/advisory/ntap-20171004-0001/
• https://support.citrix.com/article/CTX220112Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=isg3T1023885Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=isg3T1024073Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=nas8N1021264Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=ssg1S1005821Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21979393Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21980676Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21983501Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21983506Third Party Advisory
• https://www.cs.bu.edu/~goldbe/NTPattack.htmlThird Party Advisory
• https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.ascThird Party Advisory
• https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099428Third Party Advisory
• https://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.htmlThird Party Advisory
• https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
• http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.ascThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.htmlThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.htmlThird Party Advisory
• http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1930.htmlThird Party Advisory
• http://seclists.org/bugtraq/2016/Feb/164Mailing List, Third Party Advisory
• http://support.ntp.org/bin/view/Main/NtpBug2956Issue Tracking, Patch, Vendor Advisory
• http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p5_SecuritIssue Tracking, Patch, Vendor Advisory
• http://www.debian.org/security/2015/dsa-3388Third Party Advisory
• http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlThird Party Advisory
• http://www.securityfocus.com/bid/77312Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1034670Third Party Advisory, VDB Entry
• http://www.ubuntu.com/usn/USN-2783-1Third Party Advisory
• https://bto.bluecoat.com/security-advisory/sa113Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1271076Issue Tracking
• https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01Third Party Advisory, US Government Resource
• https://security.netapp.com/advisory/ntap-20171004-0001/
• https://support.citrix.com/article/CTX220112Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=isg3T1023885Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=isg3T1024073Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=nas8N1021264Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=ssg1S1005821Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21979393Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21980676Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21983501Third Party Advisory
• https://www-01.ibm.com/support/docview.wss?uid=swg21983506Third Party Advisory
• https://www.cs.bu.edu/~goldbe/NTPattack.htmlThird Party Advisory
• https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.ascThird Party Advisory
• https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099428Third Party Advisory
• https://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.htmlThird Party Advisory
• https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory

Published

Jul 21, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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