CVE-2021-1611

A vulnerability in Ethernet over GRE (EoGRE) packet processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9800 Family Wireless Controller, Embedded Wireless Controller, and Embedded Wireless on Catalyst 9000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper processing of malformed EoGRE packets. An attacker could exploit this vulnerability by sending malicious packets to the affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

CVSS v3.0 8.6 HIGH
CVSS v2.0 5.0 MEDIUM

8.6^/10

CVSS v3.0 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-gre-6u4ELzAT	Patch Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

OR	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_9800-40:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-80:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-cl:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800:-:::::::*

Information

Published : 2021-09-22 20:15

Updated : 2022-07-08 11:23

NVD link : CVE-2021-1611

Mitre link : CVE-2021-1611

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

cisco

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

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