CVE-2016-7429

Severity: low (CVSS 3.7 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-01-13 · updated 2026-06-17
Weakness: CWE-18

Description

NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.

Affected products

NTP: through 4.2.8

References

http://nwtime.org/ntp428p9_release/
http://rhn.redhat.com/errata/RHSA-2017-0252.html
http://support.ntp.org/bin/view/Main/NtpBug3072
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securityfocus.com/bid/94453
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://www.kb.cert.org/vuls/id/633847
http://nwtime.org/ntp428p9_release/
http://rhn.redhat.com/errata/RHSA-2017-0252.html

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