Vulnerability Description
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ip Conference Phone 7832 Firmware | < 12.7\(1\) |
| Cisco | Ip Conference Phone 7832 With Multiplatform Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Conference Phone 7832 | - |
| Cisco | Ip Conference Phone 8832 Firmware | < 12.7\(1\) |
| Cisco | Ip Conference Phone 8832 With Multiplatform Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Conference Phone 8832 | - |
| Cisco | Ip Phone 6821 Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 6821 | - |
| Cisco | Ip Phone 6841 Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 6841 | - |
| Cisco | Ip Phone 6851 Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 6851 | - |
| Cisco | Ip Phone 6861 Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 6861 | - |
| Cisco | Ip Phone 6871 Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 6871 | - |
| Cisco | Ip Phone 7811 Firmware | < 12.7\(1\) |
| Cisco | Ip Phone 7811 With Multiplatform Firmware | < 11.3\(1\)sr1 |
| Cisco | Ip Phone 7811 | - |
| Cisco | Ip Phone 7821 Firmware | < 12.7\(1\) |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2020-3111?
CVE-2020-3111 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload ...
How severe is CVE-2020-3111?
CVE-2020-3111 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3111?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ip Conference Phone 7832 Firmware, Cisco Ip Conference Phone 7832 With Multiplatform Firmware, Cisco Ip Conference Phone 7832, Cisco Ip Conference Phone 8832 Firmware, Cisco Ip Conference Phone 8832 With Multiplatform Firmware.