CVE-2018-7170

NameCVE-2018-7170
Descriptionntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ntp (PTS)bullseye1:4.2.8p15+dfsg-1fixed
ntpsec (PTS)bullseye1.2.0+dfsg1-4fixed
bookworm, bookworm (security)1.2.2+dfsg1-1+deb12u1fixed
sid, trixie1.2.3+dfsg1-3fixed

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

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

Notes

[stretch] - ntp <no-dsa> (Minor issue)
[jessie] - ntp <no-dsa> (Minor issue)
[wheezy] - ntp <no-dsa> (Minor issue)
- ntpsec <not-affected> (Issue not present)
http://www.kb.cert.org/vuls/id/961909
http://support.ntp.org/bin/view/Main/NtpBug3415
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S

Search for package or bug name: Reporting problems