Files or Directories Accessible to External Parties in Cisco Systems, Inc products - CVE-2021-1423
Published: March 25, 2021
Vulnerability identifier: #VU51730
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1423
CWE-ID: CWE-552
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to overwrite arbitrary files in the underlying host file system.
The vulnerability exists due to insufficient validation of the parameters of a specific CLI command. A local administrator can issue that command with specific parameters and overwrite the content of any arbitrary file that resides on the underlying host file system.
Affected software
Cisco Catalyst IW 6300
Cisco Aironet 1540 Series Access Points
Cisco Aironet 1560 Series Access Points
Cisco Catalyst 9100
Cisco Aironet 1800 Series Access Points
Cisco ESW6300 Series Access Points
Cisco 4800 Aironet Access Points
Integrated AP on 1100 Integrated Services Routers
Cisco Aironet 2800 Series Access Points
Cisco Aironet 3800 Series Access Points
Cisco Aironet 1540 Series Access Points
Cisco Aironet 1560 Series Access Points
Cisco Catalyst 9100
Cisco Aironet 1800 Series Access Points
Cisco ESW6300 Series Access Points
Cisco 4800 Aironet Access Points
Integrated AP on 1100 Integrated Services Routers
Cisco Aironet 2800 Series Access Points
Cisco Aironet 3800 Series Access Points
How to mitigate CVE-2021-1423
Install updates from vendor's website.
Cisco Catalyst IW 6300 - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1540 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1560 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Catalyst 9100 - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco ESW6300 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco 4800 Aironet Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Integrated AP on 1100 Integrated Services Routers - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 2800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 3800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1540 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1560 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Catalyst 9100 - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 1800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco ESW6300 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco 4800 Aironet Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Integrated AP on 1100 Integrated Services Routers - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 2800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5
Cisco Aironet 3800 Series Access Points - addressed in versions 8.5.171.0, 8.10.130.0, 16.12.5