NVD

CVE-2019-1967 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

A vulnerability in the Network Time Protocol (NTP) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to excessive use of system resources when the affected device is logging a drop action for received MODE_PRIVATE (Mode 7) NTP packets. An attacker could exploit this vulnerability by flooding the device with a steady stream of Mode 7 NTP packets. A successful exploit could allow the attacker to cause high CPU and memory usage on the affected device, which could cause internal system processes to restart or cause the affected device to unexpectedly reload. Note: The NTP feature is enabled by default.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.8 HIGH

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-ntp-dos	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-ntp-dos	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	NIST
CWE-399	Resource Management Errors	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

5 change records found show changes

Initial Analysis by NIST 9/05/2019 9:48:47 AM

Action	Type	Old Value	New Value
Added	CVSS V3		AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CVSS V2		(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added	CWE		CWE-399
Added	CPE Configuration		Record truncated, showing 500 of 579 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:6.0\(2\)a8::::::: cpe:2.3:o:cisco:nx-os:6.0\(2\)a8\(9.7\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)i7::::::: cpe:2.3:o:cisco:nx-os:9.2::::::: OR cpe:2.3:h:cisco:nexus_3524:-:::::::* cpe:2.3:h:cisco:nexus_3524-x:-:::::::* cpe:2.3:h:cisco:nexus_3524-xl:-:::::::* cpe:2.3:h:cisco:nexus_3548:-:::::::* cpe:2.3:h:cisco:nexus
Added	CPE Configuration		Record truncated, showing 500 of 3293 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:6.0\(2\)a8\(9.7\)::::::: cpe:2.3:o:cisco:nx-os:6.0\(2\)u6::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)i::::::: cpe:2.3:o:cisco:nx-os:9.2::::::: cpe:2.3:o:cisco:nx-os:9.2\(1\)::::::: OR cpe:2.3:h:cisco:nexus_3016:-:::::::* cpe:2.3:h:cisco:nexus_3048:-:::::::* cpe:2.3:h:cisco:nexus_3064:-:::::::* cpe:2.3:h:cisco:nexus_30
Added	CPE Configuration		Record truncated, showing 500 of 521 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:6.0\(2\)a8\(9.7\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f::::::: cpe:2.3:o:cisco:nx-os:9.2::::::: cpe:2.3:o:cisco:nx-os:9.2\(1\)::::::: OR cpe:2.3:h:cisco:nexus_36180yc-r:-:::::::* cpe:2.3:h:cisco:nexus_3636c-r:-:::::::* cpe:2.3:h:cisco:nexus_9504:-:::::::* cpe:2.3:h:cisco:nexus_9508:-:::::::* cpe:2.3:h:cisco:nexus
Added	CPE Configuration		Record truncated, showing 500 of 1087 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:6.2::::::: cpe:2.3:o:cisco:nx-os:7.2::::::: cpe:2.3:o:cisco:nx-os:7.3::::::: cpe:2.3:o:cisco:nx-os:7.3\(2\)d1\(1\)::::::: cpe:2.3:o:cisco:nx-os:8.0::::::: cpe:2.3:o:cisco:nx-os:8.1::::::: cpe:2.3:o:cisco:nx-os:8.2::::::: cpe:2.3:o:cisco:nx-os:8.3::::::: cpe:2.3:o:cisco:nx-os:8.3\(2\)s5::::::: OR
Added	CPE Configuration		Record truncated, showing 500 of 580 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:6.2::::::: cpe:2.3:o:cisco:nx-os:7.3::::::: cpe:2.3:o:cisco:nx-os:8.1::::::: cpe:2.3:o:cisco:nx-os:8.2::::::: cpe:2.3:o:cisco:nx-os:8.3::::::: OR cpe:2.3:h:cisco:mds_9000:-:::::::* cpe:2.3:h:cisco:mds_9100:-:::::::* cpe:2.3:h:cisco:mds_9140:-:::::::* cpe:2.3:h:cisco:mds_9200:-:::::::* cpe:2.3:h:c
Added	CPE Configuration		Record truncated, showing 500 of 892 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.1\(4\)::::::: cpe:2.3:o:cisco:nx-os:7.1\(4\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.1\(5\)::::::: cpe:2.3:o:cisco:nx-os:7.2::::::: cpe:2.3:o:cisco:nx-os:7.3::::::: OR cpe:2.3:h:cisco:nexus_5548p:-:::::::* cpe:2.3:h:cisco:nexus_5548up:-:::::::* cpe:2.3:h:cisco:nexus_5596t:-:::::::* cpe:2.3:h:cisco:nexus_5596up:-
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-ntp-dos No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-ntp-dos Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2019-1967
NVD Published Date:
08/30/2019
NVD Last Modified:
11/20/2024
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2019-1967 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CVE 11/20/2024 11:37:47 PM

CVE Modified by Cisco Systems, Inc. 5/14/2024 1:54:16 AM

Modified Analysis by NIST 10/16/2020 10:05:32 AM

CVE Modified by Cisco Systems, Inc. 10/09/2019 7:48:42 PM

Initial Analysis by NIST 9/05/2019 9:48:47 AM

Quick Info