Denial of Service in Cisco Small Business Switches
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-3147 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco Small Business 200 Series Smart Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 300 Series Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 500 Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Input validation error
EUVDB-ID: #VU24757
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-3147
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco Small Business 200 Series Smart Switches: before 1.3.7.18
Cisco Small Business 300 Series Managed Switches: before 1.3.7.18
Cisco Small Business 500 Series Stackable Managed Switches: before 1.3.7.18
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
