CVE-2015-7853

Critical

Published: 07/08/2017(UTC)Translated: 14/06/2026(UTC)NVD NIST

Summary

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.

Risk Assessment

Organizations may be exposed to remote attacks that could lead to unauthorized code execution or system crashes, disrupting time service operations.

Recommendation

It is recommended to update NTP to the latest version to mitigate this vulnerability and to monitor systems for unauthorized activities.

Original NVD description (English source)

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.