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Red Hat: RHSA-2020-1470-01 Low: NTP Buffer Overflow Risk Mitigated

red hat
Calendar Grey April 14, 2020
Dist Redhat Esm H88
Red Hat has released a minor severity ntp patch for RHEL 7.6 addressing a buffer overflow issue that could lead to a possible denial of service.
An update for ntp is now available for Red Hat Enterprise Linux 7.6 Extended Update Support

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat buffer overflow low severity ntp update service fix

References

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

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source: ntp-4.2.6p5-28.el7_6.1.src.rpm
x86_64: ntp-4.2.6p5-28.el7_6.1.x86_64.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.x86_64.rpm ntpdate-4.2.6p5-28.el7_6.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
noarch: ntp-doc-4.2.6p5-28.el7_6.1.noarch.rpm ntp-perl-4.2.6p5-28.el7_6.1.noarch.rpm
x86_64: ntp-debuginfo-4.2.6p5-28.el7_6.1.x86_64.rpm sntp-4.2.6p5-28.el7_6.1.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.6):
Source: ntp-4.2.6p5-28.el7_6.1.src.rpm
ppc64: ntp-4.2.6p5-28.el7_6.1.ppc64.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.ppc64.rpm ntpdate-4.2.6p5-28.el7_6.1.ppc64.rpm
ppc64le: ntp-4.2.6p5-28.el7_6.1.ppc64le.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.ppc64le.rpm ntpdate-4.2.6p5-28.el7_6.1.ppc64le.rpm
s390x: ntp-4.2.6p5-28.el7_6.1.s390x.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.s390x.rpm ntpdate-4.2.6p5-28.el7_6.1.s390x.rpm
x86_64: ntp-4.2.6p5-28.el7_6.1.x86_64.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.x86_64.rpm ntpdate-4.2.6p5-28.el7_6.1.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source: ntp-4.2.6p5-28.el7_6.1.src.rpm
aarch64: ntp-4.2.6p5-28.el7_6.1.aarch64.rpm ntp-debuginfo-4.2.6p5-28.el7_6.1.aarch64.rpm ntpdate-4.2.6p5-28.el7_6.1.aarch64.rpm
ppc64le:

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:1470-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1470
Issue date: 2020-04-14

Topic

An update for ntp is now available for Red Hat Enterprise Linux 7.6Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat buffer overflow low severity ntp update service fix

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux Server EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le, s390x

Bugs Fixed

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

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