Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2015-1799

Published: 8 April 2015

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer.

Notes

AuthorNote
mdeslaur
we will not be backporting this issue to the codebase in lucid
before it goes end-of-life. Marking as ignored.

Priority

Medium

Status

Package Release Status
ntp
Launchpad, Ubuntu, Debian
upstream
Released (4.2.8p2)
lucid Ignored

precise
Released (1:4.2.6.p3+dfsg-1ubuntu3.4)
trusty
Released (1:4.2.6.p5+dfsg-3ubuntu2.14.04.3)
utopic
Released (1:4.2.6.p5+dfsg-3ubuntu2.14.10.3)
Patches:
upstream: http://bk.ntp.org/ntp-stable/?PAGE=patch&REV=550a80b0iGyIv4t9J1GJ_74V_eEx4A