CVE-2015-7974

NameCVE-2015-7974
DescriptionNTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."
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)
ReferencesDLA-559-1, DSA-3629-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ntp (PTS)stretch1:4.2.8p10+dfsg-3+deb9u2fixed
buster1:4.2.8p12+dfsg-4fixed
bullseye1:4.2.8p14+dfsg-2fixed
sid1:4.2.8p15+dfsg-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ntpsourcewheezy1:4.2.6.p5+dfsg-2+deb7u7DLA-559-1
ntpsourcejessie1:4.2.6.p5+dfsg-7+deb8u2DSA-3629-1
ntpsource(unstable)1:4.2.8p7+dfsg-1low

Notes

http://support.ntp.org/bin/view/Main/SecurityNotice#January_2016_NTP_4_2_8p6_Securit
http://support.ntp.org/bin/view/Main/NtpBug2936

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