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
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
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Cisco |
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Configuration 1 [-]
AND |
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Configuration 2 [-]
AND |
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Configuration 3 [-]
AND |
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Configuration 4 [-]
AND |
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Configuration 5 [-]
AND |
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Configuration 6 [-]
AND |
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No data.
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2019-08-29T21:45:15.166469Z
Updated: 2024-09-16T20:03:19.157Z
Reserved: 2018-12-06T00:00:00
Link: CVE-2019-1967
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2019-08-30T09:15:20.287
Modified: 2020-10-16T14:05:32.580
Link: CVE-2019-1967
Redhat
No data.