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Red Hat Security Advisory 2018-3854-01

Red Hat Security Advisory 2018-3854-01
Posted Dec 19, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3854-01 - The Network Time Protocol 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. Issues addressed include buffer overflow, code execution, and denial of service vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability, code execution, protocol
systems | linux, redhat
advisories | CVE-2018-12327
SHA-256 | ecccca8405ce1ae112c4c9ef8699c52acaa7349eacd9444e706b1cc606052122

Red Hat Security Advisory 2018-3854-01

Change Mirror Download
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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 <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2018 Red Hat, Inc.
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