Improper access control in Cisco Systems, Inc products - CVE-2021-1449
Published: March 25, 2021
Vulnerability identifier: #VU51729
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1449
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to an improper check that is performed by the area of code that manages system startup processes. A local administrator can modify a specific file that is stored on the system, execute unsigned code at boot time and bypass the software image verification check part of the secure boot process.
Affected software
Cisco ESW6300 Series Access Points
Cisco Catalyst IW 6300
Cisco Aironet 1540 Series Access Points
Cisco Aironet 1560 Series Access Points
Integrated AP on 1100 Integrated Services Routers
Cisco Catalyst 9100
Cisco Aironet 1800 Series Access Points
Cisco Aironet 2800 Series Access Points
Cisco Aironet 3800 Series Access Points
Cisco 4800 Aironet Access Points
Cisco Catalyst IW 6300
Cisco Aironet 1540 Series Access Points
Cisco Aironet 1560 Series Access Points
Integrated AP on 1100 Integrated Services Routers
Cisco Catalyst 9100
Cisco Aironet 1800 Series Access Points
Cisco Aironet 2800 Series Access Points
Cisco Aironet 3800 Series Access Points
Cisco 4800 Aironet Access Points
How to mitigate CVE-2021-1449
Install updates from vendor's website.
Cisco ESW6300 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Catalyst IW 6300 - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1540 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1560 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Integrated AP on 1100 Integrated Services Routers - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Catalyst 9100 - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 2800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 3800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco 4800 Aironet Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Catalyst IW 6300 - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1540 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1560 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Integrated AP on 1100 Integrated Services Routers - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Catalyst 9100 - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 1800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 2800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco Aironet 3800 Series Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1
Cisco 4800 Aironet Access Points - addressed in versions 8.5.171.0, 8.10.151.0, 16.12.5, 17.3.3, 17.5.1