vulnerability
CentOS Linux: CVE-2020-13817: Moderate: ntp security update (CESA-2020:2663)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:N/I:P/A:P) | Jun 4, 2020 | Jun 24, 2020 | May 25, 2023 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:P)
Published
Jun 4, 2020
Added
Jun 24, 2020
Modified
May 25, 2023
Description
ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.
Solutions
centos-upgrade-ntpcentos-upgrade-ntp-debuginfocentos-upgrade-ntp-doccentos-upgrade-ntp-perlcentos-upgrade-ntpdatecentos-upgrade-sntp
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.