CVE-2021-34779

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-34779
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 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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.9 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:A/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 5.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:cisco:business_220-8t-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8t-e-2g:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:cisco:business_220-8p-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8p-e-2g:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:cisco:business_220-8fp-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8fp-e-2g:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:cisco:business_220-16t-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-16t-2g:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:cisco:business_220-16p-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-16p-2g:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:cisco:business_220-24t-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24t-4g:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:cisco:business_220-24p-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24p-4g:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:cisco:business_220-24fp-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24fp-4g:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:cisco:business_220-48t-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48t-4g:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:cisco:business_220-48p-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48p-4g:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:cisco:business_220-24t-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24t-4x:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:cisco:business_220-24p-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24p-4x:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:cisco:business_220-24fp-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24fp-4x:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:cisco:business_220-48t-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48t-4x:-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:cisco:business_220-48p-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48p-4x:-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:cisco:business_220-48fp-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48fp-4x:-:*:*:*:*:*:*:*
History

14 Oct 2021, 19:58

Type Values Removed Values Added
CPE cpe:2.3:o:cisco:business_220-48p-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48fp-4x:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-16p-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24fp-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48t-4g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8t-e-2g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24fp-4g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-16t-2g:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-8p-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8fp-e-2g:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-8fp-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24t-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-48fp-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48p-4g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24t-4g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48p-4x:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-16t-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-8p-e-2g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24p-4x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-48t-4x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24fp-4x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24t-4x:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-48p-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24t-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-48t-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24p-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24p-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-24p-4g:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-8t-e-2g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-24fp-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:business_220-48t-4x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:business_220-16p-2g:-:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 7.9
v3 : 8.8
CWE CWE-120
References (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T - (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T - Vendor Advisory

06 Oct 2021, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-10-06 20:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-34779

Mitre link : CVE-2021-34779

CVE.ORG link : CVE-2021-34779

JSON object : View

Products Affected

cisco

  • business_220-8t-e-2g
  • business_220-24t-4g
  • business_220-24fp-4x_firmware
  • business_220-16p-2g_firmware
  • business_220-16t-2g_firmware
  • business_220-48p-4x_firmware
  • business_220-48fp-4x
  • business_220-24fp-4g_firmware
  • business_220-24t-4x
  • business_220-48t-4x
  • business_220-24p-4x_firmware
  • business_220-24t-4g_firmware
  • business_220-48fp-4x_firmware
  • business_220-24t-4x_firmware
  • business_220-24fp-4x
  • business_220-8p-e-2g
  • business_220-8p-e-2g_firmware
  • business_220-24p-4x
  • business_220-8fp-e-2g_firmware
  • business_220-48t-4g
  • business_220-48p-4x
  • business_220-16t-2g
  • business_220-24p-4g
  • business_220-48t-4x_firmware
  • business_220-48t-4g_firmware
  • business_220-16p-2g
  • business_220-24p-4g_firmware
  • business_220-8fp-e-2g
  • business_220-24fp-4g
  • business_220-48p-4g_firmware
  • business_220-48p-4g
  • business_220-8t-e-2g_firmware
CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')