Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-1423 |
CWE-ID | CWE-552 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco Aironet 1540 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Aironet 1560 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Aironet 1800 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Aironet 2800 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Aironet 3800 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 4800 Aironet Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9100 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst IW 6300 Hardware solutions / Routers & switches, VoIP, GSM, etc Integrated AP on 1100 Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco ESW6300 Series Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU51730
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1423
CWE-ID:
CWE-552 - Files or Directories Accessible to External Parties
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco Aironet 1540 Series Access Points: 8.4 - 17.3
Cisco Aironet 1560 Series Access Points: 8.4 - 17.3
Cisco Aironet 1800 Series Access Points: 8.4 - 17.3
Cisco Aironet 2800 Series Access Points: 8.4 - 17.3
Cisco Aironet 3800 Series Access Points: 8.4 - 17.3
Cisco 4800 Aironet Access Points: 8.4 - 17.3
Cisco Catalyst 9100: 8.4 - 17.3
Cisco Catalyst IW 6300: 8.4 - 17.3
Integrated AP on 1100 Integrated Services Routers: 8.4 - 17.3
Cisco ESW6300 Series Access Points: 8.4 - 17.3
CPE2.3http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-foverwrt-HyVXvrtb
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.