CVE-2015-7974
ntp: missing key check allows impersonation between authenticated peers (VU#357792)
Severity
LowRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · January 20, 2016
Updated · November 21, 2025
Description
A flaw was found in the way NTP verified trusted keys during symmetric key authentication. An authenticated client (A) could use this flaw to modify a packet sent between a server (B) and a client (C) using a key that is different from the one known to the client (A).
Statement
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 3.6AV:N/AC:H/Au:S/C:N/I:P/A:P
CWE-304 · Missing Critical Step in Authentication