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AUSCERT External Security Bulletin Redistribution
ntp security update
6 May 2020
AusCERT Security Bulletin Summary
Operating System: UNIX variants (UNIX, Linux, OSX)
Debian GNU/Linux 8
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2020-11868
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running ntp check for an updated version of the software for their
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Package : ntp
Version : 1:4.2.6.p5+dfsg-7+deb8u3
CVE ID : CVE-2020-11868
A Denial of Service (DoS) vulnerability was discovered in the network
time protocol server/client, ntp.
ntp allowed an "off-path" attacker to block unauthenticated
synchronisation via a server mode packet with a spoofed source IP
address because transmissions were rescheduled even if a packet
lacked a valid "origin timestamp"
For Debian 8 "Jessie", this issue has been fixed in ntp version
We recommend that you upgrade your ntp packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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