CVE-2016-7433

NameCVE-2016-7433
DescriptionNTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ntp (PTS)jessie (security), jessie1:4.2.6.p5+dfsg-7+deb8u2fixed
stretch1:4.2.8p10+dfsg-3+deb9u2fixed
buster1:4.2.8p12+dfsg-4fixed
bullseye, sid1:4.2.8p13+dfsg-2fixed

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

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

Notes

[jessie] - ntp <not-affected> (Vulnerable code introduced in ntp-4.2.7p385)
[wheezy] - ntp <not-affected> (Vulnerable code introduced in ntp-4.2.7p385)
http://support.ntp.org/bin/view/Main/NtpBug3067
Although the CVE is only for the issue introduced by the fix for
http://bugs.ntp.org/show_bug.cgi?id=2085, he root-distance calculation
itself in general is incorrect in all version of ntp-4 until ntp-4.2.8p9

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