Description
ntpd-rs is an NTP implementation written in Rust. ntpd-rs does not validate the length of NTS cookies in received NTP packets to the server. An attacker can crash the server by sending a specially crafted NTP packet containing a cookie shorter than what the server expects. The server also crashes when it is not configured to handle NTS packets. The issue was caused by improper slice indexing. The indexing operations were replaced by safer alternatives that do not crash the ntpd-rs server process but instead properly handle the error condition. A patch was released in version 0.3.3.
Scores
CVSS v3
7.5
EPSS
0.0026
EPSS Percentile
49.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-130
Status
published
Products (2)
crates.io/ntpd
0.3.0 - 0.3.3crates.io
tweedegolf/ntpd-rs
0.3.0 - 0.3.3
Published
May 27, 2023
Tracked Since
Feb 18, 2026