CVE-2016-7429

low-risk
Published 2017-01-13

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.

Do I need to act?

~
5.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.7/10 Low
NETWORK / HIGH complexity

Affected Products (1)

Ntp

Affected Vendors

Ntp

References (20)

Release Notes http://nwtime.org/ntp428p9_release/
http://rhn.redhat.com/errata/RHSA-2017-0252.html
Issue Tracking http://support.ntp.org/bin/view/Main/NtpBug3072
Vendor Advisory 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...
Third Party Advisory https://www.kb.cert.org/vuls/id/633847
Release Notes http://nwtime.org/ntp428p9_release/
http://rhn.redhat.com/errata/RHSA-2017-0252.html
Issue Tracking http://support.ntp.org/bin/view/Main/NtpBug3072
Vendor Advisory 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...
Third Party Advisory https://www.kb.cert.org/vuls/id/633847
26
/ 100
low-risk
Severity 13/34 · Low
Exploitability 8/34 · Low
Exposure 5/34 · Minimal