Vulnerability identifier: #VU56834

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1419

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
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 Catalyst 9100
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Catalyst IW 6300
Hardware solutions / Routers & switches, VoIP, GSM, etc
Integrated Access Point on 1100 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Catalyst 9800 Wireless Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aironet 4800 Access Points
Other software / Other software solutions
Cisco Wireless LAN Controller
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper checking on file operations within the SSH management interface. A local user can bypass implemented security restrictions and gain elevated privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Aironet 1540 Series Access Points: All versions

Cisco Aironet 1560 Series Access Points: All versions

Cisco Aironet 1800 Series Access Points: All versions

Cisco Aironet 2800 Series Access Points: All versions

Cisco Aironet 3800 Series Access Points: All versions

Aironet 4800 Access Points: All versions

Cisco Catalyst 9100: All versions

Cisco Catalyst IW 6300: All versions

Integrated Access Point on 1100 Integrated Services Routers: All versions

Cisco Wireless LAN Controller: 8.10

Cisco Catalyst 9800 Wireless Controller: 16.12 - 17.4

---

External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-ap-LLjsGxv

---

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.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.