CVE-2020-16273

In Arm software implementing the Armv8-M processors (all versions), the stack selection mechanism could be influenced by a stack-underflow attack in v8-M TrustZone based processors. An attacker can cause a change to the stack pointer used by the Secure World from a non-secure application if the stack is not initialized. This vulnerability affects only the software that is based on Armv8-M processors with the Security Extension.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://developer.arm.com/support/arm-security-updates/armv8-m-stack-sealing	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:arm:armv8-m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:arm:armv8-m:-:*:*:*:*:*:*:*

Information

Published : 2020-11-12 11:15

Updated : 2020-12-01 11:37

NVD link : CVE-2020-16273

Mitre link : CVE-2020-16273

JSON object : View

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

Products Affected

arm

armv8-m_firmware
armv8-m

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7.8 /10