CVE-2020-3477

Cisco IOS and IOS XE Software Information Disclosure Vulnerability

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the CLI parser of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker to access files from the flash: filesystem. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by using a specific command at the command line. A successful exploit could allow the attacker to obtain read-only access to files that are located on the flash: filesystem that otherwise might not have been accessible.

Una vulnerabilidad en el analizador de la CLI de Cisco IOS Software y Cisco IOS XE Software, podría permitir a un atacante local autenticado acceder a archivos desde la flash: filesystem. La vulnerabilidad es debido a una aplicación insuficiente de restricciones durante la ejecución de un comando específico. Un atacante podría explotar esta vulnerabilidad mediante el uso de un comando específico en la línea de comandos. Una explotación con éxito podría permitir al atacante conseguir acceso de solo lectura a archivos que están ubicados en la flash: filesystem que de otro modo no podría haber sido accesible.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-09-24 CVE Published
2023-03-08 EPSS Updated
2024-11-13 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
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-info-disclosure-V4BmJBNF	2021-08-06

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"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2610xm Search vendor "Cisco" for product "2610xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2611xm Search vendor "Cisco" for product "2611xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2612 Search vendor "Cisco" for product "2612"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2620xm Search vendor "Cisco" for product "2620xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2621xm Search vendor "Cisco" for product "2621xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2650xm Search vendor "Cisco" for product "2650xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2651xm Search vendor "Cisco" for product "2651xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.3.11 Search vendor "Cisco" for product "Ios" and version "16.3.11"	-	Affected	in	Cisco Search vendor "Cisco"	2691 Search vendor "Cisco" for product "2691"	-	-	Safe