CVE-2021-33478

6.8MEDIUM

Key Information:

Vendor
Cisco
Status
Ip Phone 8800 Series With Multiplatform Firmware
Ip Phone 8861 With Multiplatform Firmware
Ip Phone 8811 With Multiplatform Firmware
Ip Phone 8841 With Multiplatform Firmware
Vendor
CVE Published:
22 July 2021

Summary

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.

References

https://tools.cisco.com/security/center/content/CiscoSecu...
x_refsource_MISC

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.