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 Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from

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====================================================================                   Red Hat Security Advisory

Synopsis:          Low: ntp security update
Advisory ID:       RHSA-2018:3854-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:3854
Issue date:        2018-12-19
CVE Names:         CVE-2018-12327 
====================================================================
1. Summary:

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 Low. 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64

3. 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):

* ntp: Stack-based buffer overflow in ntpq and ntpdc allows denial of
service or code execution (CVE-2018-12327)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1593580 - CVE-2018-12327 ntp: Stack-based buffer overflow in ntpq and ntpdc allows denial of service or code execution

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ntp-4.2.6p5-15.el6_10.src.rpm

i386:
ntp-4.2.6p5-15.el6_10.i686.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntpdate-4.2.6p5-15.el6_10.i686.rpm

x86_64:
ntp-4.2.6p5-15.el6_10.x86_64.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntpdate-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

i386:
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntp-perl-4.2.6p5-15.el6_10.i686.rpm

noarch:
ntp-doc-4.2.6p5-15.el6_10.noarch.rpm

x86_64:
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntp-perl-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ntp-4.2.6p5-15.el6_10.src.rpm

x86_64:
ntp-4.2.6p5-15.el6_10.x86_64.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntpdate-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

noarch:
ntp-doc-4.2.6p5-15.el6_10.noarch.rpm

x86_64:
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntp-perl-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ntp-4.2.6p5-15.el6_10.src.rpm

i386:
ntp-4.2.6p5-15.el6_10.i686.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntpdate-4.2.6p5-15.el6_10.i686.rpm

ppc64:
ntp-4.2.6p5-15.el6_10.ppc64.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.ppc64.rpm
ntpdate-4.2.6p5-15.el6_10.ppc64.rpm

s390x:
ntp-4.2.6p5-15.el6_10.s390x.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.s390x.rpm
ntpdate-4.2.6p5-15.el6_10.s390x.rpm

x86_64:
ntp-4.2.6p5-15.el6_10.x86_64.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntpdate-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

i386:
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntp-perl-4.2.6p5-15.el6_10.i686.rpm

noarch:
ntp-doc-4.2.6p5-15.el6_10.noarch.rpm

ppc64:
ntp-debuginfo-4.2.6p5-15.el6_10.ppc64.rpm
ntp-perl-4.2.6p5-15.el6_10.ppc64.rpm

s390x:
ntp-debuginfo-4.2.6p5-15.el6_10.s390x.rpm
ntp-perl-4.2.6p5-15.el6_10.s390x.rpm

x86_64:
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntp-perl-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ntp-4.2.6p5-15.el6_10.src.rpm

i386:
ntp-4.2.6p5-15.el6_10.i686.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntpdate-4.2.6p5-15.el6_10.i686.rpm

x86_64:
ntp-4.2.6p5-15.el6_10.x86_64.rpm
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntpdate-4.2.6p5-15.el6_10.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

i386:
ntp-debuginfo-4.2.6p5-15.el6_10.i686.rpm
ntp-perl-4.2.6p5-15.el6_10.i686.rpm

noarch:
ntp-doc-4.2.6p5-15.el6_10.noarch.rpm

x86_64:
ntp-debuginfo-4.2.6p5-15.el6_10.x86_64.rpm
ntp-perl-4.2.6p5-15.el6_10.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key

7. References:

https://access.redhat.com/security/cve/CVE-2018-12327
https://access.redhat.com/security/updates/classification#low

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact

Copyright 2018 Red Hat, Inc.
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