Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-3209

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/06/2020
Last modified:
10/06/2020

Description

A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Impact

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

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
6.80
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

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

Base Score 2.0
7.20
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios_xe:3.2.0se:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.0sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.1se:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.1sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.2se:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.2sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.3se:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.3sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.4sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.5sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.6sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.7sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.8sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.9sg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.10sg:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools