CVE-2016-7428

NameCVE-2016-7428
Descriptionntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via the poll interval in a broadcast packet.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ntp (PTS)wheezy1:4.2.6.p5+dfsg-2+deb7u6fixed
wheezy (security)1:4.2.6.p5+dfsg-2+deb7u7fixed
jessie (security), jessie1:4.2.6.p5+dfsg-7+deb8u2fixed
stretch1:4.2.8p10+dfsg-3+deb9u1fixed
buster, sid1:4.2.8p10+dfsg-5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ntpsource(unstable)1:4.2.8p9+dfsg-1low
ntpsourcejessie(not affected)
ntpsourcewheezy(not affected)

Notes

[jessie] - ntp <not-affected> (Vulnerable code not present)
[wheezy] - ntp <not-affected> (Vulnerable code not present)
http://support.ntp.org/bin/view/Main/NtpBug3113
http://www.talosintelligence.com/reports/TALOS-2016-0130/
The fixes for CVE-2015-7973 have added several new integrity checks on incoming
broadcast mode packets and issue got introduced with code changes to fix that
issue.

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