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HIGH · 8.6

CVE-2019-1964

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 Description

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.

CVSS Score

8.6

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoNx-Os>= 8.1, < 8.2\(3\)
Cisco7000 10-Slot-
Cisco7000 18-Slot-
Cisco7000 4-Slot-
Cisco7000 9-Slot-
Cisco7700 10-Slot-
Cisco7700 18-Slot-
Cisco7700 2-Slot-
Cisco7700 6-Slot-
CiscoN77-F312Ck-26-
CiscoN77-F324Fq-25-
CiscoN77-F348Xp-23-
CiscoN77-F430Cq-36-
CiscoN77-M312Cq-26L-
CiscoN77-M324Fq-25L-
CiscoN77-M348Xp-23L-
CiscoN7K-F248Xp-25E-
CiscoN7K-F306Ck-25-
CiscoN7K-F312Fq-25-
CiscoN7K-M202Cf-22L-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2019-1964?

CVE-2019-1964 is a vulnerability with a CVSS score of 8.6 (HIGH). 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...

How severe is CVE-2019-1964?

CVE-2019-1964 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-1964?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nx-Os, Cisco 7000 10-Slot, Cisco 7000 18-Slot, Cisco 7000 4-Slot, Cisco 7000 9-Slot.