CVE-2023-20047

A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco Webex Room Phone and Cisco Webex Share devices could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient resource allocation. An attacker could exploit this vulnerability by sending crafted LLDP traffic to an affected device. A successful exploit could allow the attacker to exhaust the memory resources of the affected device, resulting in a crash of the LLDP process. If the affected device is configured to support LLDP only, this could cause an interruption to inbound and outbound calling. By default, these devices are configured to support both Cisco Discovery Protocol and LLDP. To recover operational state, the affected device needs a manual restart.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lldp-memlk-McOecPT	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:webex_room_phone_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:webex_room_phone:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:cisco:webex_share_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:webex_share:-:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:a:cisco:sip_ip_phone_software:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-01-20 07:15

Updated : 2024-01-25 17:15

NVD link : CVE-2023-20047

Mitre link : CVE-2023-20047

CVE.ORG link : CVE-2023-20047

JSON object : View

Products Affected

cisco

webex_room_phone
webex_share
webex_room_phone_firmware
webex_share_firmware
sip_ip_phone_software

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-400

Uncontrolled Resource Consumption

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