medium6.8
CVE-2021-33478
The TrustZone implementation in certain Broadcom MediaxChange firmware could allow an unauthenticated, physically proximate attacker to achieve arbitrary code …
Impact
The TrustZone implementation in certain Broadcom MediaxChange firmware could allow an unauthenticated, physically proximate attacker to achieve arbitrary code execution in the TrustZone Trusted Execution Environment (TEE) of an affected device. This, for example, affects certain Cisco IP Phone and Wireless IP Phone products before 2021-07-07. Exploitation is possible only when the attacker can disassemble the device in order to control the voltage/current for chip pins.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Ip Phone 8800 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8800 Series With Multiplatform Firmware | before 11.3\(4\) |
| Cisco | Ip Phone 8811 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8811 With Multiplatform Firmware | before 11.3\(4\) |
| Cisco | Ip Phone 8841 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8841 With Multiplatform Firmware | before 11.3\(4\) |
| Cisco | Ip Phone 8845 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8845 With Multiplatform Firmware | before 11.3\(4\) |
| Cisco | Ip Phone 8851 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8851 With Multiplatform Firmware | before 11.3\(4\) |
| Cisco | Ip Phone 8861 Firmware | before 14.0\(1\) |
| Cisco | Ip Phone 8861 With Multiplatform Firmware | before 11.3\(4\) |