Stack Underflow Attack in Armv8-M Processors Affecting TrustZone Software
CVE-2020-16273

7.8HIGH

Key Information:

Vendor

Arm
Status
Armv8-m Firmware
Vendor
CVE Published:
12 November 2020

What is CVE-2020-16273?

The Armv8-M processor stack selection mechanism is vulnerable to stack-underflow attacks that may allow an attacker to influence the stack pointer for Secure World operations from a non-secure application context. If the stack is not properly initialized, this could lead to unauthorized access or execution of sensitive operations, thereby compromising the security integrity provided by TrustZone technology. This issue underscores the importance of ensuring proper stack initialization and configuration within software that leverages Armv8-M processor capabilities.

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References

https://developer.arm.com/support/arm-security-updates/ar...
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CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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