Improper Data Handling Affecting ntpdate package, versions <0:4.2.6p5-22.el7_2.2


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.86% (83rd percentile)

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  • Snyk IDSNYK-ORACLE7-NTPDATE-2508721
  • published10 Apr 2022
  • disclosed6 Jan 2017

Introduced: 6 Jan 2017

CVE-2016-1548  (opens in a new tab)
CWE-19  (opens in a new tab)

How to fix?

Upgrade Oracle:7 ntpdate to version 0:4.2.6p5-22.el7_2.2 or higher.
This issue was patched in ELSA-2016-1141.

NVD Description

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

An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.

References

CVSS Scores

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