Issued:
2017-10-26
Updated:
2017-10-26

RHSA-2017:3071 - Moderate: ntp security update

Synopsis

Moderate: ntp security update

Type/Severity

Security Advisory Moderate

Topic

An update for ntp is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time source. These packages include the ntpd service which continuously adjusts system time and utilities used to query and configure the ntpd service.

Security Fix(es):

  • Two vulnerabilities were discovered in the NTP server's parsing of configuration directives. A remote, authenticated attacker could cause ntpd to crash by sending a crafted message. (CVE-2017-6463, CVE-2017-6464)

  • A vulnerability was found in NTP, in the parsing of packets from the /dev/datum device. A malicious device could send crafted messages, causing ntpd to crash. (CVE-2017-6462)

Red Hat would like to thank the NTP project for reporting these issues. Upstream acknowledges Cure53 as the original reporter of these issues.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the ntpd daemon will restart automatically.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm
  • ntp-perl-4.2.6p5-12.el6_9.1.s390x.rpm
  • ntpdate-4.2.6p5-12.el6_9.1.ppc64.rpm
  • ntp-4.2.6p5-12.el6_9.1.s390x.rpm
  • ntp-4.2.6p5-12.el6_9.1.ppc64.rpm
  • ntp-perl-4.2.6p5-12.el6_9.1.i686.rpm
  • ntpdate-4.2.6p5-12.el6_9.1.s390x.rpm
  • ntp-4.2.6p5-12.el6_9.1.i686.rpm
  • ntp-debuginfo-4.2.6p5-12.el6_9.1.s390x.rpm
  • ntp-4.2.6p5-12.el6_9.1.src.rpm
  • ntp-perl-4.2.6p5-12.el6_9.1.ppc64.rpm
  • ntp-perl-4.2.6p5-12.el6_9.1.x86_64.rpm
  • ntpdate-4.2.6p5-12.el6_9.1.i686.rpm
  • ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm
  • ntp-doc-4.2.6p5-12.el6_9.1.noarch.rpm
  • ntp-debuginfo-4.2.6p5-12.el6_9.1.ppc64.rpm
  • ntpdate-4.2.6p5-12.el6_9.1.x86_64.rpm
  • ntp-4.2.6p5-12.el6_9.1.x86_64.rpm

Fixes

CVEs

References

Additional information