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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/
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