Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability (Cisco Cisco IP phone)
At a glance
- Source
- NVD
- EPSS
- EPSS 3.09 % · percentile 88 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
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).
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.8 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 8.8 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | HIGH 8.3 | AV:A/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24382
- GCVE · GCVE-0-2020-3111
CERT-FR advisories
- CERTFR-2020-AVI-073 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_6821_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_6841_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_6851_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_6861_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_6871_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_7811_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_7821_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_7841_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_7861_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8845_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:ip_phone_8865_firmware:*:*:*:*:*:*:*:*< 12.7\(1\)cpe:2.3:o:cisco:ip_phone_8865_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(1\)sr1cpe:2.3:o:cisco:unified_ip_conference_phone_8831_firmware:*:*:*:*:*:*:*:*< 10.3\(1\)sr6cpe:2.3:o:cisco:unified_ip_conference_phone_8831_for_third-party_call_control_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:*:*:*:*:*:*:*:*< 11.0\(5\)sr2cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:*:*:*:*:*:*:*:*< 11.0\(5\)sr2
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IP phone | affected unspecified < 12.7(1) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |