CVE-2015-8140
ntp: ntpq protocol vulnerable to replay attacks
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · January 20, 2016
Updated · May 13, 2026
Description
The ntpq protocol in NTP before 4.2.8p7 allows remote attackers to conduct replay attacks by sniffing the network.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
This issue can be mitigated by one of the following methods: disabling ntpq in ntp.conf, configuring ntpd to get time from multiple sources, or using a restriction list in your ntp.conf to limit who is allowed to issue ntpq queries.
CVSS / CWE
CVSS 2.0 · 5.4AV:A/AC:M/Au:N/C:P/I:P/A:P
CWE-294 · Authentication Bypass by Capture-replay