Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
5.0

NTP server may change settings with malformed authentication

CVE-2014-9296 · published 11 years ago
Summary

The NTP time‑keeping service can keep processing a request even after it sees an authentication error. An attacker could send specially crafted network packets to cause the server to alter its association settings unexpectedly. Update the NTP software to the latest version to stop this behavior.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ntp ntp <= 4.2.7
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
Original advisory text
The receive function in ntp_proto.c in ntpd in NTP before 4.2.8 continues to execute after detecting a certain authentication error, which might allow remote attackers to trigger an unintended asso...
The receive function in ntp_proto.c in ntpd in NTP before 4.2.8 continues to execute after detecting a certain authentication error, which might allow remote attackers to trigger an unintended association change via crafted packets.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
16% chance of attack within 30 days
Type
CWE-17DEPRECATED: Code
Timeline
Published20 Dec 2014
Updated24 Oct 2026
First seen29 Sep 2026
Sources
CVE-2014-9296 · NVD
Track software like this
Free during beta