CVE-2015-5300
HIGH severity · CVSS 7.5 · CWE-361
7.5CVSS HIGH
Summary
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).
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)9%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://aix.software.ibm.com/aix/efixes/security/ntp_advisory5.ascAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.htmlAdvisory