CVE-2016-4956

NameCVE-2016-4956
Descriptionntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ntpsourcewheezy(not affected)
ntpsourcejessie(not affected)
ntpsource(unstable)1:4.2.8p8+dfsg-1

Notes

[jessie] - ntp <not-affected> (Fix for CVE-2016-1548 wasn't backported)
[wheezy] - ntp <not-affected> (Fix for CVE-2016-1548 wasn't backported)
http://support.ntp.org/bin/view/Main/SecurityNotice#June_2016_ntp_4_2_8p8_NTP_Securi
http://support.ntp.org/bin/view/Main/NtpBug3042
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