Input validation error in Cisco Systems, Inc products - CVE-2020-3147
Published: January 30, 2020
Vulnerability identifier: #VU24757
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3147
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper validation of requests sent to the web interface. A remote attacker can send a specially crafted request to the web interface and cause an unexpected reload of the device, resulting in a denial of service condition.
Affected software
Cisco Small Business 200 Series Smart Switches
Cisco Small Business 300 Series Managed Switches
Cisco Small Business 500 Series Stackable Managed Switches
Cisco Small Business 300 Series Managed Switches
Cisco Small Business 500 Series Stackable Managed Switches
How to mitigate CVE-2020-3147
Install updates from vendor's website.
Cisco Small Business 200 Series Smart Switches - update to 1.3.7.18
Cisco Small Business 300 Series Managed Switches - update to 1.3.7.18
Cisco Small Business 500 Series Stackable Managed Switches - update to 1.3.7.18
Cisco Small Business 300 Series Managed Switches - update to 1.3.7.18
Cisco Small Business 500 Series Stackable Managed Switches - update to 1.3.7.18