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Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Interface Denial of Service Vulnerability

cisco-sa-smb-switches-web-dos-xMyFFkt8 · Medium · Published · Updated

A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an unauthenticated, remote attacker to render the web-based management interface unusable, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause a permanent invalid redirect for requests sent to the web-based management interface of the device, resulting in a DoS condition. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-switches-web-dos-xMyFFkt8

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2021-40127
Cisco Bug IDsCSCvz62174
CVSS ScoreBase 5.3
Base 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:X
Product Names From Source
Cisco Small Business Smart and Managed Switches

CSAF Product Statuses

Product Status Source CVE Rows
Cisco Small Business Smart and Managed Switches known_affected cisco_csaf CVE-2021-40127 1

Related Products

Product CVE Evidence
Cisco Small Business Smart and Managed Switches CVE-2021-40127 Cisco OpenVuln
200 Series Smart Switches CVE-2021-40127 Cisco OpenVuln · family-level
300 Series Managed Switches CVE-2021-40127 Cisco OpenVuln · family-level
500 Series Stackable Managed Switches CVE-2021-40127 Cisco OpenVuln · family-level