CVE-2020-3418 : A vulnerability in Cisco IOS XE Wireless Controller Software for Cisco Catalyst

A vulnerability in Cisco IOS XE Wireless Controller Software for Cisco Catalyst 9800 Series Routers could allow an unauthenticated, adjacent attacker to send ICMPv6 traffic prior to the client being placed into RUN state. The vulnerability is due to an incomplete access control list (ACL) being applied prior to RUN state. An attacker could exploit this vulnerability by connecting to the associated service set identifier (SSID) and sending ICMPv6 traffic. A successful exploit could allow the attacker to send ICMPv6 traffic prior to RUN state.

Published 2020-09-24 18:15:19

Updated 2021-08-06 18:57:08

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: BypassGain privilege

Products affected by CVE-2020-3418

Cisco » Ios Xe » Version: 17.1.1
cpe:2.3:o:cisco:ios_xe:17.1.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9800-40 » Version: N/A
When used together with: Cisco » Catalyst 9800-80 » Version: N/A
When used together with: Cisco » Catalyst 9800-cl » Version: N/A
When used together with: Cisco » Catalyst 9800-l » Version: N/A
When used together with: Cisco » Catalyst 9800-l-c » Version: N/A
When used together with: Cisco » Catalyst 9800-l-f » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2020-3418

EPSS FAQ

0.06%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 23 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3418

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
3.3	LOW	AV:A/AC:L/Au:N/C:N/I:P/A:N	6.5	2.9	NIST
Access Vector: Adjacent Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
4.7	MEDIUM	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N	2.8	1.4	Cisco Systems, Inc.
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: Low Availability: None
4.7	MEDIUM	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N	2.8	1.4	NIST
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: Low Availability: None

CWE ids for CVE-2020-3418

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Assigned by: ykramarz@cisco.com (Secondary)

References for CVE-2020-3418

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-icmpv6-qb9eYyCR

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family Improper Access Control Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2020-3418

Products affected by CVE-2020-3418

Exploit prediction scoring system (EPSS) score for CVE-2020-3418

CVSS scores for CVE-2020-3418

CWE ids for CVE-2020-3418

References for CVE-2020-3418