A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient error handling when parsing DNS requests. An attacker could exploit this vulnerability by sending a series of malicious DNS requests to an Umbrella Connector client interface of an affected device. A successful exploit could allow the attacker to cause a crash of the iosd process, which triggers a reload of the affected device.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
---|---|
Cisco |
|
Configuration 1 [-]
AND |
|
No data.
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2020-09-24T17:51:44.121872Z
Updated: 2024-09-17T03:48:23.664Z
Reserved: 2019-12-12T00:00:00
Link: CVE-2020-3510
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2020-09-24T18:15:21.150
Modified: 2020-10-08T14:07:41.107
Link: CVE-2020-3510
Redhat
No data.