CVE-2021-33478

MEDIUM

6.8

Description

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.

CVE Details

CVSS v3.1 Score6.8

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorPHYSICAL

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published7/22/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

cisco:ip_phone_8800_firmwarecisco:ip_phone_8800_series_with_multiplatform_firmwarecisco:ip_phone_8811_firmwarecisco:ip_phone_8811_with_multiplatform_firmwarecisco:ip_phone_8841_firmwarecisco:ip_phone_8841_with_multiplatform_firmwarecisco:ip_phone_8845_firmwarecisco:ip_phone_8845_with_multiplatform_firmwarecisco:ip_phone_8851_firmwarecisco:ip_phone_8851_with_multiplatform_firmwarecisco:ip_phone_8861_firmwarecisco:ip_phone_8861_with_multiplatform_firmwarecisco:ip_phone_8865_firmwarecisco:ip_phone_8865_with_multiplatform_firmwarecisco:wireless_ip_phone_8821_firmware

Weaknesses (CWE)

CWE-119

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-brcm-mxc-jul2021-26LqUZUh(cve@mitre.org)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-brcm-mxc-jul2021-26LqUZUh(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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