Detections
Analytics
RHEL 7 : ntp (RHSA-2020:2663)
high Nessus Plugin ID 137828
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Synopsis
The remote Red Hat host is missing one or more security updates for ntp.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2663 advisory.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: ntpd using highly predictable transmit timestamps could result in time change or DoS (CVE-2020-13817)
* ntp: DoS on client ntpd using server mode packet (CVE-2020-11868)
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.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL ntp package based on the guidance in RHSA-2020:2663.See Also
http://www.nessus.org/u?7a2ebca4
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/errata/RHSA-2020:2663
Plugin Details
Severity: High
ID: 137828
File Name: redhat-RHSA-2020-2663.nasl
Version: 1.10
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/25/2020
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2020-13817
CVSS v3
Risk Factor: High
Base Score: 7.4
Temporal Score: 6.4
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:ntp-doc, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:ntp, p-cpe:/a:redhat:enterprise_linux:ntp-perl, p-cpe:/a:redhat:enterprise_linux:ntpdate, p-cpe:/a:redhat:enterprise_linux:sntp
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 6/23/2020
Vulnerability Publication Date: 4/17/2020
Reference Information
CVE: CVE-2020-11868, CVE-2020-13817