CVE-2020-3364

Cisco IOS XR Software Standby Route Processor Gigabit Ethernet Management Interface Access Control List Bypass Vulnerability

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the access control list (ACL) functionality of the standby route processor management interface of Cisco IOS XR Software could allow an unauthenticated, remote attacker to reach the configured IP addresses on the standby route processor management Gigabit Ethernet Management interface. The vulnerability is due to a logic error that was introduced in the Cisco IOS XR Software, which prevents the ACL from working when applied against the standby route processor management interface. An attacker could exploit this vulnerability by attempting to access the device through the standby route processor management interface.

Una vulnerabilidad en la funcionalidad Access Control List (ACL) de la interfaz de administración del procesador de ruta en espera de Cisco IOS XR Software, podría permitir a un atacante remoto no autenticado alcance las direcciones IP configuradas en la interfaz Gigabit Ethernet Management de administración del procesador de ruta en espera. La vulnerabilidad es debido a un error lógico que se introdujo en el Cisco IOS XR Software, que impide que la ACL funcione cuando se aplica contra la interfaz de administración del procesador de ruta en espera. Un atacante podría explotar esta vulnerabilidad al intentar acceder al dispositivo por medio de la interfaz de administración del procesador de ruta en espera

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-06-18 CVE Published
2023-06-21 EPSS Updated
2024-11-15 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control
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-xracl-zbWSWREt	2020-06-24

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"				6.7.1 Search vendor "Cisco" for product "Ios Xr" and version "6.7.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				7.0.2 Search vendor "Cisco" for product "Ios Xr" and version "7.0.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				7.0.11 Search vendor "Cisco" for product "Ios Xr" and version "7.0.11"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				7.0.12 Search vendor "Cisco" for product "Ios Xr" and version "7.0.12"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				7.1.1 Search vendor "Cisco" for product "Ios Xr" and version "7.1.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				7.1.15 Search vendor "Cisco" for product "Ios Xr" and version "7.1.15"		-		Affected