Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-1449

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/03/2021
Last modified:
07/11/2023

Description

A vulnerability in the boot logic of Cisco Access Points Software could allow an authenticated, local attacker to execute unsigned code at boot time. The vulnerability is due to an improper check that is performed by the area of code that manages system startup processes. An attacker could exploit this vulnerability by modifying a specific file that is stored on the system, which would allow the attacker to bypass existing protections. A successful exploit could allow the attacker to execute unsigned code at boot time and bypass the software image verification check part of the secure boot process of an affected device. Note: To exploit this vulnerability, the attacker would need to have access to the development shell (devshell) on the device.

Impact

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

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
6.70
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
4.60
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:aironet_access_point_software:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1560:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_iw6300:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:esw6300:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:catalyst_9800_firmware:*:*:*:*:*:*:*:* 16.12.5 (excluding)
cpe:2.3:o:cisco:catalyst_9800_firmware:*:*:*:*:*:*:*:* 17.1 (including) 17.3.3 (excluding)
cpe:2.3:o:cisco:catalyst_9800_firmware:*:*:*:*:*:*:*:* 17.4 (including) 17.5.1 (excluding)
cpe:2.3:h:cisco:catalyst_9800:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools