Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-3477

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/09/2020
Last modified:
06/08/2021

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.10 LOW
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

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

Base Score 2.0
2.10
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:16.3.11:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2610xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2611xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2612:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2620xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2621xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2650xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2651xm:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:2691:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools