Description

NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.

References

http://nwtime.org/ntp428p9_release/

http://rhn.redhat.com/errata/RHSA-2017-0252.html

http://support.ntp.org/bin/view/Main/NtpBug3071

http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities

http://www.securityfocus.com/bid/94451

http://www.securitytracker.com/id/1037354

https://bto.bluecoat.com/security-advisory/sa139

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc

https://usn.ubuntu.com/3707-2/

https://www.kb.cert.org/vuls/id/633847

Details

Risk Information

CVSS v2

CVSS v3