{"id":"CVE-2025-58066","aliases":["DEBIAN-CVE-2025-58066","EUVD-2025-26241","GHSA-4855-q42w-5vr4","UBUNTU-CVE-2025-58066"],"status":"published","title":"DoS Vulnerability in ntpd-rs","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00349,"percentile":0.28965,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-406"],"published":"2025-08-29T20:07:27Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"crates.io","package":"ntpd-rs","fixed_in":["1.6.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:14","package":"rust-ntpd","fixed_in":["1.6.2-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"ntpd-rs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.0"},{"fixed":"1.6.2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"rust-ntpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-6","1.6.2-1","1.6.2-2","1.6.2-3","1.6.2-4","1.7.1-1","1.7.2-1","1.7.2-2","1.9.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"rust-ntpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.2-1"}]}],"versions":["1.4.0-6"]},{"source":"osv","ecosystem":"crates.io","package":"ntpd-rs","ranges":[{"type":"SEMVER","events":[{"introduced":"1.2.0"},{"fixed":"1.6.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"rust-ntpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-5","1.1.0-2","1.1.0-3","1.1.1-1","1.1.1-2","1.1.2-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"rust-ntpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1build1","1.4.0-6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"rust-ntpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-6","1.6.2-2","1.6.2-3","1.6.2-4","1.7.1-1"]}],"products":[{"vendor":"pendulum-project","product":"ntpd-rs"}],"references":[{"url":"https://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-4855-q42w-5vr4","tags":["x_refsource_CONFIRM","advisory","web","report"]},{"url":"https://github.com/pendulum-project/ntpd-rs/commit/da37cf167736cbd4d7804b1ed7ceb572468298e0","tags":["x_refsource_MISC","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-58066","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4855-q42w-5vr4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/58xxx/CVE-2025-58066.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-58066","tags":["advisory"]},{"url":"https://github.com/pendulum-project/ntpd-rs","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2025-58066","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-58066","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-58066","title":"DoS Vulnerability in ntpd-rs","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T20:54:13.174Z","modified":"2025-09-02T13:53:59.838Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T14:32:37.351404Z"}],"euvd":[{"id":"EUVD-2025-26241","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T20:54:13Z","modified":"2025-09-02T13:53:59Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T20:31:48.787221Z"}],"ghsa":[{"id":"GHSA-4855-q42w-5vr4","title":"DoS Vulnerability in ntpd-rs","description":"# Summary\n\nA denial of service vulnerability was discovered in ntpd-rs where an attacker can induce a message storm between two NTP servers running ntpd-rs.\n\n# Details\n\nSince ntpd-rs version 1.2.0, when configured as a server, incorrectly responded to all NTP messages sent to the server's port with a time reply, including to responses from other servers. As a consequence, a message with a spoofed IP address of another server could cause two servers running ntpd-rs to continually respond to each other, consuming significant amounts of resources.\n\n# Impact\n\nAny time server running ntpd-rs with version between 1.2.0 and 1.6.1 inclusive which allows non-NTS traffic is affected. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.\n\n# Workarounds\n\nShould upgrading not be possible, the impact of the issue can be mitigated by:\n - Whitelisting access to only IP addresses of clients using the server, using the ignore filter method.\n - Blocking incoming non-request traffic on the NTP server port using a firewall.\n - Disabling public access to the vulnerable NTP server\n - Disabling the server functionality by removing any [server] sections from the configuration.\n\n# Acknowledgements\n\nThe ntpd-rs authors thank Eric Sesterhenn from X41 D-Sec GmbH for finding and reporting this issue.","status":"published","published":"2025-08-29T20:07:27Z","modified":"2025-08-29T21:59:27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T14:38:55.953734Z"}],"nvd":[{"id":"CVE-2025-58066","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T21:15:36.28Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T14:11:26.200344Z"}],"osv":[{"id":"CVE-2025-58066","title":"DoS Vulnerability in ntpd-rs","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T20:54:13.174Z","modified":"2026-10-28T02:30:42.657780154Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T15:44:51.190588Z"},{"id":"DEBIAN-CVE-2025-58066","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T21:15:36.28Z","modified":"2026-10-23T17:47:35.990418005Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"GHSA-4855-q42w-5vr4","title":"DoS Vulnerability in ntpd-rs","description":"# Summary\n\nA denial of service vulnerability was discovered in ntpd-rs where an attacker can induce a message storm between two NTP servers running ntpd-rs.\n\n# Details\n\nSince ntpd-rs version 1.2.0, when configured as a server, incorrectly responded to all NTP messages sent to the server's port with a time reply, including to responses from other servers. As a consequence, a message with a spoofed IP address of another server could cause two servers running ntpd-rs to continually respond to each other, consuming significant amounts of resources.\n\n# Impact\n\nAny time server running ntpd-rs with version between 1.2.0 and 1.6.1 inclusive which allows non-NTS traffic is affected. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.\n\n# Workarounds\n\nShould upgrading not be possible, the impact of the issue can be mitigated by:\n - Whitelisting access to only IP addresses of clients using the server, using the ignore filter method.\n - Blocking incoming non-request traffic on the NTP server port using a firewall.\n - Disabling public access to the vulnerable NTP server\n - Disabling the server functionality by removing any [server] sections from the configuration.\n\n# Acknowledgements\n\nThe ntpd-rs authors thank Eric Sesterhenn from X41 D-Sec GmbH for finding and reporting this issue.","status":"published","published":"2025-08-29T20:07:27Z","modified":"2025-08-29T21:58:17Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T15:46:36.782754Z"},{"id":"UBUNTU-CVE-2025-58066","description":"nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.","status":"published","published":"2025-08-29T21:15:00Z","modified":"2026-05-20T16:23:36.660494307Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:55:50.817402Z"}]}}