| Description: | Summary:
The remote host is missing an update for the 'ntp' package(s) announced via the USN-3349-1 advisory.
Vulnerability Insight:
Yihan Lian discovered that NTP incorrectly handled certain large request
data values. A remote attacker could possibly use this issue to cause NTP
to crash, resulting in a denial of service. This issue only affected
Ubuntu 16.04 LTS. (CVE-2016-2519)
Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed
addresses when performing rate limiting. A remote attacker could possibly
use this issue to perform a denial of service. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7426)
Matthew Van Gundy discovered that NTP incorrectly handled certain crafted
broadcast mode packets. A remote attacker could possibly use this issue to
perform a denial of service. This issue only affected Ubuntu 14.04 LTS,
Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7427, CVE-2016-7428)
Miroslav Lichvar discovered that NTP incorrectly handled certain responses.
A remote attacker could possibly use this issue to perform a denial of
service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and
Ubuntu 16.10. (CVE-2016-7429)
Sharon Goldberg and Aanchal Malhotra discovered that NTP incorrectly
handled origin timestamps of zero. A remote attacker could possibly use
this issue to bypass the origin timestamp protection mechanism. This issue
only affected Ubuntu 16.10. (CVE-2016-7431)
Brian Utterback, Sharon Goldberg and Aanchal Malhotra discovered that NTP
incorrectly performed initial sync calculations. This issue only applied
to Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7433)
Magnus Stubman discovered that NTP incorrectly handled certain mrulist
queries. A remote attacker could possibly use this issue to cause NTP to
crash, resulting in a denial of service. This issue only affected Ubuntu
16.04 LTS and Ubuntu 16.10. (CVE-2016-7434)
Matthew Van Gund discovered that NTP incorrectly handled origin timestamp
checks. A remote attacker could possibly use this issue to perform a denial
of service. This issue only affected Ubuntu Ubuntu 16.10, and Ubuntu 17.04.
(CVE-2016-9042)
Matthew Van Gundy discovered that NTP incorrectly handled certain control
mode packets. A remote attacker could use this issue to set or unset traps.
This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu
16.10. (CVE-2016-9310)
Matthew Van Gundy discovered that NTP incorrectly handled the trap service.
A remote attacker could possibly use this issue to cause NTP to crash,
resulting in a denial of service. This issue only applied to Ubuntu 14.04
LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9311)
It was discovered that NTP incorrectly handled memory when processing long
variables. A remote authenticated user could possibly use this issue to
cause NTP to crash, resulting in a denial of service. (CVE-2017-6458)
It was discovered that NTP incorrectly handled memory when processing long
variables. A remote authenticated user could possibly ... [Please see the references for more information on the vulnerabilities]
Affected Software/OS:
'ntp' package(s) on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, Ubuntu 17.04.
Solution:
Please install the updated package(s).
CVSS Score:
7.1
CVSS Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:C
|
