PT-2018-8690 · Cisco · Cisco Wireless Lan Controller

Published 2018-05-02 · Updated 2020-10-22 · CVE-2018-0235

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Cisco Wireless LAN Controller version 8.5.103.0

Description: A vulnerability in the 802.11 frame validation functionality could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This is due to incomplete input validation of certain 802.11 management information element frames received from wireless clients. An attacker could exploit this by sending a malformed 802.11 management frame to an affected device, causing it to reload and resulting in a DoS condition.

Recommendations: For Cisco Wireless LAN Controller version 8.5.103.0, update to a version that includes the fix for this issue to prevent unexpected reloads and denial of service conditions. As a temporary workaround, consider restricting wireless client access to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-0235

Affected Products

Cisco Wireless Lan Controller

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2018-0235 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-mfdos · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-0235 · Vendor Advisory
• http://securityfocus.com/bid/104080 · Note