Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-1442

Severity CVSS v4.0:
Pending analysis
Type:
CWE-532 Information Exposure Through Log Files
Publication date:
24/03/2021
Last modified:
30/03/2021

Description

A vulnerability in a diagnostic command for the Plug-and-Play (PnP) subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to the level of an Administrator user (level 15) on an affected device. The vulnerability is due to insufficient protection of sensitive information. An attacker with low privileges could exploit this vulnerability by issuing the diagnostic CLI show pnp profile when a specific PnP listener is enabled on the device. A successful exploit could allow the attacker to obtain a privileged authentication token. This token can be used to send crafted PnP messages and execute privileged commands on the targeted system.

Impact

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.80
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

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

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios_xe:3.6.3e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.4e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.5ae:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.5be:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.5e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.6e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.7ae:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.7be:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.7e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.8e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.9ae:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.9e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.10e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.3e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.4e:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools