CVE-2019-1751

Cisco IOS Software NAT64 Denial of Service Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Una vulnerabilidad en las funciones NAT64 (Network Address Translation 64) del software Cisco IOS podría permitir que un atacante remoto no autenticado provoque un "wedge" en la cola de la interfaz o la recarga del dispositivo. La vulnerabilidad se debe a la gestión incorrecta de ciertas transmisiones de paquetes IPv4 que se envían a través del dispositivo. Un atacante podría explotar esta vulnerabilidad enviando transmisiones de paquetes IPv4 a través del dispositivo. Su explotación podría permitir que el atacante consiga un "wedge" en la cola de la interfaz o la recarga del dispositivo, provocando una denegación de servicio (DoS).

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-03-28 CVE Published
2024-08-17 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107601	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nat64	2019-10-09

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)cg1 Search vendor "Cisco" for product "Ios" and version "15.4\(1\)cg1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)t Search vendor "Cisco" for product "Ios" and version "15.4\(1\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)t1 Search vendor "Cisco" for product "Ios" and version "15.4\(1\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)t2 Search vendor "Cisco" for product "Ios" and version "15.4\(1\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)t3 Search vendor "Cisco" for product "Ios" and version "15.4\(1\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(1\)t4 Search vendor "Cisco" for product "Ios" and version "15.4\(1\)t4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(2\)t Search vendor "Cisco" for product "Ios" and version "15.4\(2\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(2\)t1 Search vendor "Cisco" for product "Ios" and version "15.4\(2\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(2\)t2 Search vendor "Cisco" for product "Ios" and version "15.4\(2\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(2\)t3 Search vendor "Cisco" for product "Ios" and version "15.4\(2\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(2\)t4 Search vendor "Cisco" for product "Ios" and version "15.4\(2\)t4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m1 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m2 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m3 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m4 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m5 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m5"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m6 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m6"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m6a Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m6a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m7 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m7"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m7a Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m7a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m8 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m8"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m9 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m9"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.4\(3\)m10 Search vendor "Cisco" for product "Ios" and version "15.4\(3\)m10"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(1\)t Search vendor "Cisco" for product "Ios" and version "15.5\(1\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(1\)t1 Search vendor "Cisco" for product "Ios" and version "15.5\(1\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(1\)t2 Search vendor "Cisco" for product "Ios" and version "15.5\(1\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(1\)t3 Search vendor "Cisco" for product "Ios" and version "15.5\(1\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(1\)t4 Search vendor "Cisco" for product "Ios" and version "15.5\(1\)t4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)t Search vendor "Cisco" for product "Ios" and version "15.5\(2\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)t1 Search vendor "Cisco" for product "Ios" and version "15.5\(2\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)t2 Search vendor "Cisco" for product "Ios" and version "15.5\(2\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)t3 Search vendor "Cisco" for product "Ios" and version "15.5\(2\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)t4 Search vendor "Cisco" for product "Ios" and version "15.5\(2\)t4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(2\)xb Search vendor "Cisco" for product "Ios" and version "15.5\(2\)xb"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m0a Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m1 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m2 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m2a Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m2a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m3 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m4 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m4a Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m4a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m4b Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m4b"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m4c Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m4c"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m5 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m5"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m5a Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m5a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m6 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m6"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m6a Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m6a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m7 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m7"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.5\(3\)m8 Search vendor "Cisco" for product "Ios" and version "15.5\(3\)m8"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(1\)t Search vendor "Cisco" for product "Ios" and version "15.6\(1\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(1\)t0a Search vendor "Cisco" for product "Ios" and version "15.6\(1\)t0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(1\)t1 Search vendor "Cisco" for product "Ios" and version "15.6\(1\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(1\)t2 Search vendor "Cisco" for product "Ios" and version "15.6\(1\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(1\)t3 Search vendor "Cisco" for product "Ios" and version "15.6\(1\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(2\)t Search vendor "Cisco" for product "Ios" and version "15.6\(2\)t"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(2\)t0a Search vendor "Cisco" for product "Ios" and version "15.6\(2\)t0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(2\)t1 Search vendor "Cisco" for product "Ios" and version "15.6\(2\)t1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(2\)t2 Search vendor "Cisco" for product "Ios" and version "15.6\(2\)t2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(2\)t3 Search vendor "Cisco" for product "Ios" and version "15.6\(2\)t3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m0a Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m1 Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m1a Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m1a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m1b Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m1b"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m2 Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m2a Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m2a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m3 Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m3a Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m3a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m4 Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.6\(3\)m5 Search vendor "Cisco" for product "Ios" and version "15.6\(3\)m5"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.7\(3\)m Search vendor "Cisco" for product "Ios" and version "15.7\(3\)m"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.7\(3\)m0a Search vendor "Cisco" for product "Ios" and version "15.7\(3\)m0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.7\(3\)m1 Search vendor "Cisco" for product "Ios" and version "15.7\(3\)m1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.7\(3\)m2 Search vendor "Cisco" for product "Ios" and version "15.7\(3\)m2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.7\(3\)m3 Search vendor "Cisco" for product "Ios" and version "15.7\(3\)m3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.8\(3\)m Search vendor "Cisco" for product "Ios" and version "15.8\(3\)m"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.8\(3\)m0a Search vendor "Cisco" for product "Ios" and version "15.8\(3\)m0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.8\(3\)m0b Search vendor "Cisco" for product "Ios" and version "15.8\(3\)m0b"		-		Affected