CVE-2021-1373 : A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE W

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of an affected device. The vulnerability is due to insufficient validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

Published 2021-03-24 21:15:12

Updated 2021-07-13 19:08:13

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-1373

Probability of exploitation activity in the next 30 days: 0.16%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 52 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-1373

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-1373

CWE-126 Buffer Over-read

The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Assigned by: ykramarz@cisco.com (Primary)

References for CVE-2021-1373

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-2OA3JgKS

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability
Vendor Advisory

Products affected by CVE-2021-1373

Cisco » Ios Xe » Version: 16.12.1
cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.10.1
cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.11.1
cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
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 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.10.1e
cpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.10.1s
cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.11.1b
cpe:2.3:o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.11.1c
cpe:2.3:o:cisco:ios_xe:16.11.1c:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.11.2
cpe:2.3:o:cisco:ios_xe:16.11.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.1s
cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.1t
cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.2s
cpe:2.3:o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.2t
cpe:2.3:o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.3s
cpe:2.3:o:cisco:ios_xe:16.12.3s:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.1.1s
cpe:2.3:o:cisco:ios_xe:17.1.1s:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.1.1t
cpe:2.3:o:cisco:ios_xe:17.1.1t:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.1.2
cpe:2.3:o:cisco:ios_xe:17.1.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.2.1a
cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.2.3
cpe:2.3:o:cisco:ios_xe:17.2.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.11.1a
cpe:2.3:o:cisco:ios_xe:16.11.1a:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.3
cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.2.1
cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.4
cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 16.12.4a
cpe:2.3:o:cisco:ios_xe:16.12.4a:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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
Cisco » Ios Xe » Version: 17.3.1
cpe:2.3:o:cisco:ios_xe:17.3.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9400 » Version: N/A
When used together with: Cisco » Catalyst 9500 » Version: N/A
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

Vulnerability Details : CVE-2021-1373

Exploit prediction scoring system (EPSS) score for CVE-2021-1373

CVSS scores for CVE-2021-1373

CWE ids for CVE-2021-1373

References for CVE-2021-1373

Products affected by CVE-2021-1373