Vulnerability identifier: #VU87882

Vulnerability risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-20271

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
6300 Series Embedded Services Access Points
Other software / Other software solutions
Aironet 4800 Access Points
Other software / Other software solutions
Business 100 Series Mesh Extenders
Other software / Other software solutions
Business 200 Series Access Points
Other software / Other software solutions
Catalyst IW6300 Heavy Duty Series Access Points
Other software / Other software solutions
Wireless LAN Controller Software
Other software / Other software solutions
Cisco Aironet 1540 Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aironet 1560 Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aironet 1800 Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aironet 2800 Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Aironet 3800 Series Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9100 Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Integrated Access Point on 1100 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Wide Pluggable Form Factor Wi-Fi 6 AP Module for Industrial Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9800 Wireless Controller Software
Hardware solutions / Routers & switches, VoIP, GSM, etc
Business Wireless Access Point Software
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the IP packet processing of Cisco Access Point (AP) Software. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

6300 Series Embedded Services Access Points: All versions

Cisco Aironet 1540 Series Access Points: All versions

Aironet 1560 Series Access Points: All versions

Aironet 1800 Series Access Points: All versions

Aironet 2800 Series Access Points: All versions

Aironet 3800 Series Access Points: All versions

Aironet 4800 Access Points: All versions

Business 100 Series Mesh Extenders: All versions

Business 200 Series Access Points: All versions

Catalyst 9100 Access Points: All versions

Catalyst IW6300 Heavy Duty Series Access Points: All versions

Integrated Access Point on 1100 Integrated Services Routers: All versions

Wide Pluggable Form Factor Wi-Fi 6 AP Module for Industrial Routers: All versions

Wireless LAN Controller Software: 8.9 - 8.10

Catalyst 9800 Wireless Controller Software: 17.2 - 17.12

Business Wireless Access Point Software: 10.5.2 - 10.9.1

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External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-h9TGGX6W

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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