High severity · published Jan 30, 2020
CVE-2020-3147
A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device
7.5
CVSS
2.3%
EPSS
No
On KEV
Description
A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. This vulnerability affects firmware releases prior than 1.3.7.18
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SF
Sf300-08 Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-24 Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-24mp Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-24p Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-24pp Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-48 Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-48p Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf300-48pp Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf302-08 Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf302-08mp Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf302-08mpp Firmware · Cisco
before 1.3.7.18 · source: NVD
SF
Sf302-08p Firmware · Cisco
before 1.3.7.18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-3147
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-3147
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smlbus-switch-dos-R6VquS2u
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