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.

CVSS v3 6.8 MEDIUM
CVSS v2.0 4.6 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

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

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2020-09-14 14:15

Updated : 2021-04-08 14:47

NVD link : CVE-2020-11683

Mitre link : CVE-2020-11683

CVE.ORG link : CVE-2020-11683

JSON object : View

Products Affected

linux4sam

at91bootstrap

CWE

CWE-203

Observable Discrepancy

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