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Red Hat: RHSA-2018:3854-01 Low: NTP Buffer Overflow Risk

red hat
Calendar Grey December 19, 2018
Dist Redhat Esm H88
Canonical releases a critical patch for the ssh daemon on Ubuntu 20.04, addressing potential privilege escalation flaws.
An update for ntp is now available for Red Hat Enterprise Linux 6

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, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory denial of service security update buffer overflow Red Hat Enterprise Linux low impact ntp service

References

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

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:

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

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

Topic

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 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 security update buffer overflow Red Hat Enterprise Linux low impact ntp service

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

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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