安全公告详情

NS-SA-2019-0114

2019-07-17 15:01:51

简介

moderate: ntp security update

严重级别

moderate

主题

An update for ntp is now available for NewStart CGSL MAIN 4.05.
NewStart Security has rated this update as having a security impact of moderate. A Common Vunlnerability Scoring System(CVSS)base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.

详细描述

ntp: The Network Time Protocol (NTP) is used to synchronize a computer's time with another reference time source. This package includes ntpd (a daemon which continuously adjusts system time) and utilities used to query and configure the ntpd daemon. Perl scripts ntp-wait and ntptrace are in the ntp-perl package and the ntpdate program is in the ntpdate package. The documentation is in the ntp-doc package.


Security Fix(es):
ntp: It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources.(CVE-2016-7426)
ntp: A flaw was found in the way ntpd running on a host with multiple network interfaces handled certain server responses. A remote attacker could use this flaw which would cause ntpd to not synchronize with the source.(CVE-2016-7429)
ntp: A flaw was found in the way ntpd calculated the root delay. A remote attacker could send a specially-crafted spoofed packet to cause denial of service or in some special cases even crash.(CVE-2016-7433)
ntp: A flaw was found in the control mode functionality of ntpd. A remote attacker could send a crafted control mode packet which could lead to information disclosure or result in DDoS amplification attacks.(CVE-2016-9310)
ntp: A flaw was found in the way ntpd implemented the trap service. A remote attacker could send a specially crafted packet to cause a null pointer dereference that will crash ntpd, resulting in a denial of service.(CVE-2016-9311)
ntp: bugfix


Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
http://security.gd-linux.com/how_to_apply_patch.html
Remember the build tag is 4.05.F7.

影响组件

  • ntp

影响产品

  • CGSL MAIN 4.05

更新包

{"fix":[{"product":"CGSL MAIN 4.05","pkgs":[{"binary":["ntp-4.2.6p5-10.el6.centos.2.x86_64.rpm","ntpdate-4.2.6p5-10.el6.centos.2.x86_64.rpm"],"source":"ntp-4.2.6p5-10.el6.centos.2.src.rpm"}]}]}

CVE

参考