CVE-2020-3530

Cisco IOS XR Authenticated User Privilege Escalation Vulnerability

Severity Score

8.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to execute that command, even though administrative privileges should be required. The attacker must have valid credentials on the affected device. The vulnerability is due to incorrect mapping in the source code of task group assignments for a specific command. An attacker could exploit this vulnerability by issuing the command, which they should not be authorized to issue, on an affected device. A successful exploit could allow the attacker to invalidate the integrity of the disk and cause the device to restart. This vulnerability could allow a user with read permissions to issue a specific command that should require Administrator privileges.

Una vulnerabilidad en la asignación del grupo de tareas para un comando de la CLI específico en Cisco IOS XR Software podría permitir a un atacante local autenticado ejecutar ese comando, aunque deberían ser requeridos privilegios administrativos. El atacante debe tener credenciales válidas en el dispositivo afectado. La vulnerabilidad es debido a una asignación incorrecta en el código fuente de las asignaciones de grupos de tareas para un comando específico. Un atacante podría explotar esta vulnerabilidad mediante la emisión del comando, que no debería estar autorizado para emitir, en un dispositivo afectado. Una explotación con éxito podría permitir al atacante invalidar la integridad del disco y causar que el dispositivo se reinicie. Esta vulnerabilidad podría permitir a un usuario con permisos de lectura emitir un comando específico que requeriría privilegios de Administrador

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-09-04 CVE Published
2023-03-08 EPSS Updated
2024-11-13 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls
CWE-863: Incorrect Authorization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-cli-privescl-sDVEmhqv	2023-11-07

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 Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9000v Search vendor "Cisco" for product "Asr 9000v"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9001 Search vendor "Cisco" for product "Asr 9001"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9006 Search vendor "Cisco" for product "Asr 9006"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9010 Search vendor "Cisco" for product "Asr 9010"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9901 Search vendor "Cisco" for product "Asr 9901"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9904 Search vendor "Cisco" for product "Asr 9904"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9906 Search vendor "Cisco" for product "Asr 9906"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9910 Search vendor "Cisco" for product "Asr 9910"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9912 Search vendor "Cisco" for product "Asr 9912"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 9922 Search vendor "Cisco" for product "Asr 9922"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 1001 Search vendor "Cisco" for product "Ncs 1001"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 1002 Search vendor "Cisco" for product "Ncs 1002"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 1004 Search vendor "Cisco" for product "Ncs 1004"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5001 Search vendor "Cisco" for product "Ncs 5001"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5002 Search vendor "Cisco" for product "Ncs 5002"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5011 Search vendor "Cisco" for product "Ncs 5011"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5501 Search vendor "Cisco" for product "Ncs 5501"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5501-se Search vendor "Cisco" for product "Ncs 5501-se"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5502 Search vendor "Cisco" for product "Ncs 5502"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5502-se Search vendor "Cisco" for product "Ncs 5502-se"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5508 Search vendor "Cisco" for product "Ncs 5508"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xr Search vendor "Cisco" for product "Ios Xr"	< 7.1.2 Search vendor "Cisco" for product "Ios Xr" and version " < 7.1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Ncs 5516 Search vendor "Cisco" for product "Ncs 5516"	-	-	Safe