Remote time manipulation vulnerability in NTP software by NTP Project
CVE-2015-5300

7.5HIGH

Key Information:

Vendor
Fedoraproject
Status
Fedora
Vendor
CVE Published:
21 July 2017

Summary

The NTP software is susceptible to a vulnerability where the panic_gate check is only re-enabled following a significant change (greater than 128 milliseconds) to the system clock. This flaw permits remote attackers, when NTP is executed with the -g option, to set the server clock to any arbitrary time. Additionally, through responding to a series of requests from trusted sources, attackers can manipulate the time by up to 900 seconds, potentially leading to a denial of service as the NTP daemon may abort and require a restart.

References

http://rhn.redhat.com/errata/RHSA-2015-1930.html
vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-announce/2016...
vendor-advisoryx_refsource_SUSE
http://seclists.org/bugtraq/2016/Feb/164
mailing-listx_refsource_MLIST

EPSS Score

20% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.