Allocation of Resources Without Limits or Throttling in ntpd-rs - CVE-2024-38528
Published: June 28, 2024 / Updated: April 24, 2026
Vulnerability identifier: #VU127484
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-38528
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the NTS-KE server connection handling when accepting NTS-KE TCP connections. A remote attacker can open a large number of parallel TCP connections to cause a denial of service.
Only configurations with an NTS-KE server enabled are vulnerable. The connections must be opened quickly enough to avoid the key-exchange timeout.
Affected software
ntpd-rs
How to mitigate CVE-2024-38528
Install security update from vendor's website.
ntpd-rs - update to 1.1.3