This bug was fixed in the package ntp - 1:4.2.8p12+dfsg-3ubuntu4.20.10.1
---------------
ntp (1:4.2.8p12+dfsg-3ubuntu4.20.10.1) groovy-security; urgency=medium
* SECURITY UPDATE: Null dereference attack in mode 6 packet (LP: #1891953)
- debian/patches/CVE-2019-8936.patch: Guard against operations
on NULL pointer in ntpd/ntp_control.c.
- CVE-2019-8936
* Fix FTBFS with GCC-10
- debian/rules: add -fcommon flag to CFLAGS
-- Brian Morton <[email protected]> Fri, 27 Nov 2020 16:10:51 -0500
** Changed in: ntp (Ubuntu Groovy)
Status: Confirmed => Fix Released
** Changed in: ntp (Ubuntu Focal)
Status: Confirmed => Fix Released
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Touch seeded packages, which is subscribed to ntp in Ubuntu.
https://bugs.launchpad.net/bugs/1891953
Title:
CVE-2019-8936
Status in ntp package in Ubuntu:
Confirmed
Status in ntp source package in Bionic:
Fix Released
Status in ntp source package in Focal:
Fix Released
Status in ntp source package in Groovy:
Fix Released
Status in ntp package in Debian:
Fix Released
Bug description:
It was discovered that the fix for CVE-2018-7182 introduced a NULL pointer
dereference into NTP. An attacker could use this vulnerability to cause a
denial of service (crash).
https://people.canonical.com/~ubuntu-
security/cve/2019/CVE-2019-8936.html
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https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1891953/+subscriptions
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