VDB-125713 · CVE-2018-0443 · BID 105686

Cisco Wireless LAN Controller CAPWAP Request resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

A vulnerability classified as problematic was found in Cisco Wireless LAN Controller (Wireless LAN Software) (version unknown). Affected by this vulnerability is an unknown function of the component CAPWAP. The manipulation as part of a Request leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper input validation on fields within CAPWAP Discovery Request packets by the affected device. An attacker could exploit this vulnerability by sending malicious CAPWAP Discovery Request packets to the Cisco WLC Software. A successful exploit could allow the attacker to cause the Cisco WLC Software to disconnect associated access points (APs). While the APs disconnect and reconnect, service will be unavailable for a brief period of time, resulting in a DoS condition.

The bug was discovered 10/17/2018. The weakness was presented 10/17/2018 as cisco-sa-20181017-wlc-capwap-d as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2018-0443 since 11/26/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118461 (Cisco Wireless LAN Controller Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316342 (Cisco Wireless LAN Controller Software Control and Provisioning of Wireless Access Points Protocol Denial of Service Vulnerability(cisco-sa-20181017-wlc-capwap-dos)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 hours after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118461). See 125709, 125711 and 125712 for similar entries.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118461
Nessus Name: Cisco Wireless LAN Controller Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

11/26/2017 🔍
10/17/2018 +324 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/18/2018 +1 days 🔍
10/26/2018 +8 days 🔍
05/30/2023 +1677 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20181017-wlc-capwap-d
Status: Confirmed

CVE: CVE-2018-0443 (🔍)
SecurityTracker: 1041922
SecurityFocus: 105686 - Cisco Wireless LAN Controller CVE-2018-0443 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 10/18/2018 06:44
Updated: 05/30/2023 09:00
Changes: 10/18/2018 06:44 (70), 04/05/2020 09:16 (5), 05/30/2023 08:56 (4), 05/30/2023 09:00 (12)
Complete: 🔍

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