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AUSCERT External Security Bulletin Redistribution
ESB-2019.3004
ntp security, bug fix, and enhancement update
8 August 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: ntp
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-12327
Reference: ASB-2019.0010
ESB-2018.3935
ESB-2018.3239
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:2077
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Red Hat Security Advisory
Synopsis: Low: ntp security, bug fix, and enhancement update
Advisory ID: RHSA-2019:2077-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2077
Issue date: 2019-08-06
CVE Names: CVE-2018-12327
=====================================================================
1. Summary:
An update for ntp is now available for Red Hat Enterprise Linux 7.
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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.7 Release Notes linked from 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/):
1550637 - Server time not being synchronised with NTP after upgrading ntp packages
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 Client (v. 7):
Source:
ntp-4.2.6p5-29.el7.src.rpm
x86_64:
ntp-4.2.6p5-29.el7.x86_64.rpm
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
ntpdate-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch:
ntp-doc-4.2.6p5-29.el7.noarch.rpm
ntp-perl-4.2.6p5-29.el7.noarch.rpm
x86_64:
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
sntp-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
ntp-4.2.6p5-29.el7.src.rpm
x86_64:
ntp-4.2.6p5-29.el7.x86_64.rpm
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
ntpdate-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch:
ntp-doc-4.2.6p5-29.el7.noarch.rpm
ntp-perl-4.2.6p5-29.el7.noarch.rpm
x86_64:
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
sntp-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
ntp-4.2.6p5-29.el7.src.rpm
ppc64:
ntp-4.2.6p5-29.el7.ppc64.rpm
ntp-debuginfo-4.2.6p5-29.el7.ppc64.rpm
ntpdate-4.2.6p5-29.el7.ppc64.rpm
ppc64le:
ntp-4.2.6p5-29.el7.ppc64le.rpm
ntp-debuginfo-4.2.6p5-29.el7.ppc64le.rpm
ntpdate-4.2.6p5-29.el7.ppc64le.rpm
s390x:
ntp-4.2.6p5-29.el7.s390x.rpm
ntp-debuginfo-4.2.6p5-29.el7.s390x.rpm
ntpdate-4.2.6p5-29.el7.s390x.rpm
x86_64:
ntp-4.2.6p5-29.el7.x86_64.rpm
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
ntpdate-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
noarch:
ntp-doc-4.2.6p5-29.el7.noarch.rpm
ntp-perl-4.2.6p5-29.el7.noarch.rpm
ppc64:
ntp-debuginfo-4.2.6p5-29.el7.ppc64.rpm
sntp-4.2.6p5-29.el7.ppc64.rpm
ppc64le:
ntp-debuginfo-4.2.6p5-29.el7.ppc64le.rpm
sntp-4.2.6p5-29.el7.ppc64le.rpm
s390x:
ntp-debuginfo-4.2.6p5-29.el7.s390x.rpm
sntp-4.2.6p5-29.el7.s390x.rpm
x86_64:
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
sntp-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
ntp-4.2.6p5-29.el7.src.rpm
x86_64:
ntp-4.2.6p5-29.el7.x86_64.rpm
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
ntpdate-4.2.6p5-29.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
noarch:
ntp-doc-4.2.6p5-29.el7.noarch.rpm
ntp-perl-4.2.6p5-29.el7.noarch.rpm
x86_64:
ntp-debuginfo-4.2.6p5-29.el7.x86_64.rpm
sntp-4.2.6p5-29.el7.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
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2019 Red Hat, Inc.
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