Cisco IP Phone TCP Packet Flood Denial of Service Vulnerability (Cisco Cisco IP Phones with Multiplatform Firmware)
At a glance
- Source
- NVD
- EPSS
- EPSS 8.03 % · percentile 95 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the TCP packet processing functionality of Cisco IP Phones could allow an unauthenticated, remote attacker to cause the phone to stop responding to incoming calls, drop connected calls, or unexpectedly reload. The vulnerability is due to insufficient TCP ingress packet rate limiting. An attacker could exploit this vulnerability by sending a high and sustained rate of crafted TCP traffic to the targeted device. A successful exploit could allow the attacker to impact operations of the phone or cause the phone to reload, leading to a denial of service (DoS) condition.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24845
- GCVE · GCVE-0-2020-3574
CERT-FR advisories
- CERTFR-2020-AVI-713 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ip_dect_210_firmware:*:*:*:*:*:*:*:*< 4.8.1cpe:2.3:o:cisco:ip_dect_6825_firmware:*:*:*:*:*:*:*:*< 4.8.1cpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:*< 11.3.2cpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:*< 11.3.2cpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:*< 11.3.2cpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:*< 11.3.2cpe:2.3:o:cisco:unified_ip_conference_phone_8831_firmware:9.3\(4\):servicerelease3:*:*:*:*:*:*cpe:2.3:o:cisco:webex_room_phone_firmware:*:*:*:*:*:*:*:*< 1.2.0
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IP Phones with Multiplatform Firmware | affected n/a |
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 |