CVE-2019-1751

Cisco IOS Software NAT64 Denial of Service Vulnerability

Description

A vulnerability in the Network Address Translation 64 (NAT64) functions of Cisco IOS Software could allow an unauthenticated, remote attacker to cause either an interface queue wedge or a device reload. The vulnerability is due to the incorrect handling of certain IPv4 packet streams that are sent through the device. An attacker could exploit this vulnerability by sending specific IPv4 packet streams through the device. An exploit could allow the attacker to either cause an interface queue wedge or a device reload, resulting in a denial of service (DoS) condition.

Category

8.6
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.11% Top 25%
Vendor Advisory cisco.com
Affected: Cisco Cisco IOS Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nat64 patch vendor advisory
http://www.securityfocus.com/bid/107601 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-1751?
CVE-2019-1751 has been scored as a high severity vulnerability.
How to fix CVE-2019-1751?
To fix CVE-2019-1751, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1751 being actively exploited in the wild?
It is possible that CVE-2019-1751 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1751?
CVE-2019-1751 affects Cisco Cisco IOS Software.
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