CVE-2018-7184

NameCVE-2018-7184
Descriptionntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.
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+deb8u2vulnerable
stretch1:4.2.8p10+dfsg-3+deb9u2vulnerable
buster1:4.2.8p12+dfsg-4fixed
bullseye, sid1:4.2.8p13+dfsg-2fixed
ntpsec (PTS)buster1.1.3+dfsg1-2fixed
bullseye, sid1.1.7+dfsg1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ntpsource(unstable)1:4.2.8p11+dfsg-1low
ntpsecsource(unstable)(not affected)

Notes

[stretch] - ntp <no-dsa> (Minor issue)
[jessie] - ntp <no-dsa> (Minor issue)
[wheezy] - ntp <ignored> (Minor issue)
- ntpsec <not-affected> (Issue not present)
http://www.kb.cert.org/vuls/id/961909
http://support.ntp.org/bin/view/Main/NtpBug3453
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S
http://bk.ntp.org/ntp-stable/?PAGE=cset&REV=5a76f46bK1M87GD1tJounOczC-5Zow

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