Resource exhaustion in Cisco Webex Room Phone
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco Webex Room Phone — versions RoomPhone 1.1.0, RoomPhone 1.2.0, RoomPhone 1.2.0SR1
- Cisco Sip Ip Phone Software
- Cisco Webex Room Phone
- Cisco Webex Room Phone Firmware
- Cisco Webex Share
- Cisco Webex Share Firmware
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20047?
- CVE-2023-20047 is a medium-severity vulnerability in Cisco Webex Room Phone, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2023-01-20.
- How severe is CVE-2023-20047?
- Medium severity. CVSS v3 base score is 6.5 out of 10.