CVE Vulnerability

CVE-2020-11683

A timing side channel was discovered in AT91bootstrap before 3.9.2. It can be exploited by attackers with physical access to forge CMAC values and subsequently boot arbitrary code on an affected system.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://labs.f-secure.com/advisories/microchip-at91bootstrap/ Exploit Third Party Advisory
https://github.com/linux4sam/at91bootstrap/commit/7753914c9a622c245f3a3cf2af5e24b6a9904213 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:linux4sam:at91bootstrap:*:*:*:*:*:*:*:*
Information

Published : 2020-09-14 02:15

Updated : 2021-04-08 02:47

NVD link : CVE-2020-11683

Mitre link : CVE-2020-11683

Products Affected
No products.
CWE
CWE-203