Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker could perform the following: Execute code on the affected device or cause it to reload unexpectedly Cause LLDP database corruption on the affected device For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Cisco has released firmware updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
describes (6)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-34780US | high8.8 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
| CVE-2021-34779US | high8.8 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
| CVE-2021-34778US | medium4.3 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
| CVE-2021-34777US | medium4.3 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
| CVE-2021-34776US | medium4.3 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
| CVE-2021-34775US | medium4.3 | — | ||
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker… | ||||
references
External citations — patches, advisories, analysis.
- CSCvz29108,external
- CSCvz29116external
- CSCvz29120,external
- CSCvz29121external
- CSCvz29126external
- CSCvz29134external
- CSCwa32673external
- CSCwa32708external
remediations (12)
- FixedCisco Small Business 200 Series Smart Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 200 Series Smart Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 200 Series Smart Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 220 Series Smart Plus Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 220 Series Smart Plus Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 220 Series Smart Plus Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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