Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-1751

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
28/03/2019
Last modified:
09/10/2019

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.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:15.4\(1\)cg1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools