Improper Input Validation Affecting ntp-doc package, versions <0:4.2.6p5-19.el7_1.3


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
36.12% (98th percentile)

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  • Snyk IDSNYK-RHEL7-NTPDOC-5052147
  • published26 Jul 2021
  • disclosed21 Oct 2015

Introduced: 21 Oct 2015

CVE-2015-5300  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:7 ntp-doc to version 0:4.2.6p5-19.el7_1.3 or higher.
This issue was patched in RHSA-2015:1930.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ntp-doc package and not the ntp-doc package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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).

References

CVSS Scores

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