Cisco Wireless LAN Controller CAPWAP Request resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.1 | $0-$5k | 0.00 |
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.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 7.1VulDB 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.): 🔍
CVSSv2
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Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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EPSS Percentile: 🔍
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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 Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: UpgradeStatus: 🔍
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Timeline
11/26/2017 🔍10/17/2018 🔍
10/17/2018 🔍
10/17/2018 🔍
10/17/2018 🔍
10/17/2018 🔍
10/18/2018 🔍
10/26/2018 🔍
05/30/2023 🔍
Sources
Vendor: cisco.comAdvisory: 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: 🔍
Entry
Created: 10/18/2018 06:44Updated: 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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