CVE-2019-1964 : A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could all

A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.

Published 2019-08-28 19:15:11

Updated 2019-10-09 23:48:42

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Products affected by CVE-2019-1964

Cisco » Nx-os
Versions from including (>=) 8.3 and before (<) 8.4
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 7000 10-slot » Version: N/A
When used together with: Cisco » 7000 18-slot » Version: N/A
When used together with: Cisco » 7000 4-slot » Version: N/A
When used together with: Cisco » 7000 9-slot » Version: N/A
When used together with: Cisco » 7700 10-slot » Version: N/A
When used together with: Cisco » 7700 18-slot » Version: N/A
When used together with: Cisco » 7700 2-slot » Version: N/A
When used together with: Cisco » 7700 6-slot » Version: N/A
When used together with: Cisco » N77-f312ck-26 » Version: N/A
When used together with: Cisco » N77-f324fq-25 » Version: N/A
When used together with: Cisco » N77-f348xp-23 » Version: N/A
When used together with: Cisco » N77-f430cq-36 » Version: N/A
When used together with: Cisco » N77-m312cq-26l » Version: N/A
When used together with: Cisco » N77-m324fq-25l » Version: N/A
When used together with: Cisco » N77-m348xp-23l » Version: N/A
When used together with: Cisco » N7k-f248xp-25e » Version: N/A
When used together with: Cisco » N7k-f306ck-25 » Version: N/A
When used together with: Cisco » N7k-f312fq-25 » Version: N/A
When used together with: Cisco » N7k-m202cf-22l » Version: N/A
When used together with: Cisco » N7k-m206fq-23l » Version: N/A
When used together with: Cisco » N7k-m224xp-23l » Version: N/A
When used together with: Cisco » N7k-m324fq-25l » Version: N/A
When used together with: Cisco » N7k-m348xp-25l » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 1 » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 2 » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 2e » Version: N/A
When used together with: Cisco » Nexus 7700 Supervisor 2e » Version: N/A
When used together with: Cisco » Nexus 7700 Supervisor 3e » Version: N/A
Cisco » Nx-os
Versions from including (>=) 8.1 and before (<) 8.2\(3\)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 7000 10-slot » Version: N/A
When used together with: Cisco » 7000 18-slot » Version: N/A
When used together with: Cisco » 7000 4-slot » Version: N/A
When used together with: Cisco » 7000 9-slot » Version: N/A
When used together with: Cisco » 7700 10-slot » Version: N/A
When used together with: Cisco » 7700 18-slot » Version: N/A
When used together with: Cisco » 7700 2-slot » Version: N/A
When used together with: Cisco » 7700 6-slot » Version: N/A
When used together with: Cisco » N77-f312ck-26 » Version: N/A
When used together with: Cisco » N77-f324fq-25 » Version: N/A
When used together with: Cisco » N77-f348xp-23 » Version: N/A
When used together with: Cisco » N77-f430cq-36 » Version: N/A
When used together with: Cisco » N77-m312cq-26l » Version: N/A
When used together with: Cisco » N77-m324fq-25l » Version: N/A
When used together with: Cisco » N77-m348xp-23l » Version: N/A
When used together with: Cisco » N7k-f248xp-25e » Version: N/A
When used together with: Cisco » N7k-f306ck-25 » Version: N/A
When used together with: Cisco » N7k-f312fq-25 » Version: N/A
When used together with: Cisco » N7k-m202cf-22l » Version: N/A
When used together with: Cisco » N7k-m206fq-23l » Version: N/A
When used together with: Cisco » N7k-m224xp-23l » Version: N/A
When used together with: Cisco » N7k-m324fq-25l » Version: N/A
When used together with: Cisco » N7k-m348xp-25l » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 1 » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 2 » Version: N/A
When used together with: Cisco » Nexus 7000 Supervisor 2e » Version: N/A
When used together with: Cisco » Nexus 7700 Supervisor 2e » Version: N/A
When used together with: Cisco » Nexus 7700 Supervisor 3e » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-1964

EPSS FAQ

1.45%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 79 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-1964

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-1964

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2019-1964

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-ipv6-dos

Cisco NX-OS Software IPv6 Denial of Service Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2019-1964

Products affected by CVE-2019-1964

Exploit prediction scoring system (EPSS) score for CVE-2019-1964

CVSS scores for CVE-2019-1964

CWE ids for CVE-2019-1964

References for CVE-2019-1964