Vulnerability identifier: #VU14435

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0415

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Cisco Small Business 300 Series Wireless Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Small Business 100 Series Wireless Access Points
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows an adjacent authenticated attacker to cause DoS condition on the target system.

The vulnerability exists in the implementation of Extensible Authentication Protocol over LAN (EAPOL) functionality due to improper processing of certain EAPOL frames. An adjacent attacker can send a stream of specially crafted EAPOL frames, force the access point (AP) to disassociate all the associated stations (STAs) and to disallow future, new association requests.

Mitigation
Update the affected product to version 1.0.6.7.

Vulnerable software versions

Cisco Small Business 300 Series Wireless Access Points: 1.0.6.6

Cisco Small Business 100 Series Wireless Access Points: 1.0.6.6

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-csb-wap-dos

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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