CVE-2021-34769

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities 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.

CVSS v3 8.6 HIGH
CVSS v2.0 7.8 HIGH

8.6^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

7.8^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:cisco:ios_xe:3.15.1xbs:::::::*
	cpe:2.3:o:cisco:ios_xe:3.15.2xbs:::::::*
	cpe:2.3:o:cisco:ios_xe:17.3.1:::::::*
	cpe:2.3:o:cisco:ios_xe:17.3.2:::::::*
	cpe:2.3:o:cisco:ios_xe:17.3.2a:::::::*
	cpe:2.3:o:cisco:ios_xe:17.4.1:::::::*
	cpe:2.3:o:cisco:ios_xe:17.5.1:::::::*

OR	cpe:2.3:h:cisco:catalyst_9800:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-40:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-40_wireless_controller:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-80:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-80_wireless_controller:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-cl:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-l:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-l-c:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-l-f:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800_embedded_wireless_controller:-:::::::*

History

21 Nov 2024, 06:11

Type	Values Removed	Values Added
CVSS	v2 : ~~7.8~~ v3 : ~~7.5~~	v2 : 7.8 v3 : 8.6
References	~~() https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY - Vendor Advisory~~	() https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY - Vendor Advisory

13 Oct 2021, 14:48

Type	Values Removed	Values Added
CWE		CWE-415
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.8 v3 : 7.5
References	~~(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY -~~	(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY - Vendor Advisory
CPE		cpe:2.3:o:cisco:ios_xe:3.15.2xbs:::::::* cpe:2.3:o:cisco:ios_xe:17.3.1:::::::* cpe:2.3:h:cisco:catalyst_9800-cl:-:::::::* cpe:2.3:h:cisco:catalyst_9800-80:-:::::::* cpe:2.3:h:cisco:catalyst_9800-l:-:::::::* cpe:2.3:h:cisco:catalyst_9800_embedded_wireless_controller:-:::::::* cpe:2.3:h:cisco:catalyst_9800-80_wireless_controller:-:::::::* cpe:2.3:h:cisco:catalyst_9800-40_wireless_controller:-:::::::* cpe:2.3:h:cisco:catalyst_9800:-:::::::* cpe:2.3:o:cisco:ios_xe:17.5.1:::::::* cpe:2.3:o:cisco:ios_xe:17.3.2a:::::::* cpe:2.3:h:cisco:catalyst_9800-l-c:-:::::::* cpe:2.3:o:cisco:ios_xe:3.15.1xbs:::::::* cpe:2.3:h:cisco:catalyst_9800-l-f:-:::::::* cpe:2.3:o:cisco:ios_xe:17.3.2:::::::* cpe:2.3:o:cisco:ios_xe:17.4.1:::::::* cpe:2.3:h:cisco:catalyst_9800-40:-:::::::*

23 Sep 2021, 03:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-09-23 03:15

Updated : 2024-11-21 06:11

NVD link : CVE-2021-34769

Mitre link : CVE-2021-34769

CVE.ORG link : CVE-2021-34769

JSON object : View

Products Affected

cisco

catalyst_9800-l-c
catalyst_9800-cl
catalyst_9800-40
catalyst_9800-80
catalyst_9800-l-f
catalyst_9800-40_wireless_controller
catalyst_9800_embedded_wireless_controller
catalyst_9800
catalyst_9800-80_wireless_controller
catalyst_9800-l
ios_xe

CWE

CWE-415

Double Free

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These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities 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."}, {"lang": "es", "value": "Varias vulnerabilidades en el procesamiento del protocolo Control and Provisioning of Wireless Access Points (CAPWAP) de Cisco IOS XE Software para Cisco Catalyst 9000 Family Wireless Controllers podr\u00edan permitir a un atacante remoto no autenticado causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Estas vulnerabilidades son debido a que la comprobaci\u00f3n de los paquetes CAPWAP es insuficiente. Un atacante podr\u00eda explotar las vulnerabilidades mediante el env\u00edo de un paquete CAPWAP malformado a un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar que el dispositivo afectado se bloquee y se recargue, resultando en una condici\u00f3n de DoS"}], "lastModified": "2024-11-21T06:11:09.563", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4BF22C29-84DF-44CA-B574-FE04AB39E344"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C2C7C0BA-D618-4B65-B42C-43393167EEE0"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:17.3.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "128F95D7-E49F-4B36-8F47-823C0298449E"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:17.3.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B270A04-9961-4E99-806B-441CD674AFBD"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:17.3.2a:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1360069D-0358-4746-8C3F-44C2A40988D7"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:17.4.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A6B707B-4543-41F1-83DF-49A93BF56FB1"}, {"criteria": "cpe:2.3:o:cisco:ios_xe:17.5.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "938B0720-8CA7-43BA-9708-5CE9EC7A565A"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:catalyst_9800:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A48E6CF0-7A3B-4D11-8D02-0CD38F2420E9"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-40:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "1B9ED0E5-CB20-4106-9CF2-8EB587B33543"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-40_wireless_controller:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8E283C34-43AE-49A5-A72B-32DEA185ABD3"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-80:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2B0E620C-8E09-4F7C-A326-26013173B993"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-80_wireless_controller:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "ADB3AF13-5324-42CD-8EDB-6F730BF46214"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-cl:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FF93F1C8-669F-4ECB-8D81-ECDA7B550175"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-l:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2E0BA345-B7D7-4975-9199-4DC7875BBFD0"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-l-c:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "4E9EA95F-4E39-4D9C-8A84-D1F6014A4A40"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800-l-f:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EA0BC769-C244-41BD-BE80-E67F4E1CDDA4"}, {"criteria": "cpe:2.3:h:cisco:catalyst_9800_embedded_wireless_controller:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "78706517-83F4-4D44-A6EC-B78ADCEABAC0"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com"}

8.6 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

7.8 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

JSON object

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8.6^/10

7.8^/10

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