Cisco IP Phones Cisco Discovery Protocol and Link Layer Discovery Protocol Remote Code Execution and Denial of Service Vulnerabilities (Cisco Cisco IP Phones with Multiplatform Firmware)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.33 % · percentile 26 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
Description
Multiple vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) implementations for Cisco IP Phone Series 68xx/78xx/88xx could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP phone. These vulnerabilities are due to missing checks when the IP phone processes a Cisco Discovery Protocol or LLDP packet. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted IP phone. A successful exploit could allow the attacker to execute code on the affected IP phone or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Weaknesses (CWE)
- CWE-120 — Buffer Copy without Checking Size of Input
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:X/RC:X/E:X | cisco |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2021-6846
- GCVE · GCVE-0-2021-1379
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_7811_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_7811_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_7821_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_7821_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_7841_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_7841_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_7861_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_7861_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8811_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8841_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8851_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8861_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8845_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8845_firmware:12.8\(1\):-:*:*:*:*:*:*cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:*:*:*:*:*:*:*:*< 11.3\(2\)cpe:2.3:o:cisco:ip_phone_8865_firmware:*:*:*:*:*:*:*:*< 12.8\(1\)cpe:2.3:o:cisco:ip_phone_8865_firmware:12.8\(1\):-:*:*:*:*:*:*- +12 more
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IP Phones with Multiplatform Firmware | affected 11.1.2 ; affected 11.2.1 ; affected 11.2.3 ; affected 11.2.2 ; affected 11.2.3 MSR1-1 ; affected 11.1.2 MSR1-1 |
| Cisco · Cisco Session Initiation Protocol (SIP) Software | affected 9.0(3) ; affected 9.0(2)SR2 ; affected 9.0(2)SR1 ; affected 9.2(1) ; affected 9.4(2)SR1 ; affected 9.4(2) |
| Cisco · Cisco Small Business IP Phones | affected 7.4.8 ; affected 7.4.3 ; affected 7.5.5a ; affected 7.3.7 ; affected 7.5.2 ; affected 7.5.1 |
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 |
| 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 |