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nvd[email protected]NVD:CVE-2021-43327
HistoryDec 02, 2021 - 8:15 p.m.

CVE-2021-43327

2021-12-0220:15:07
web.nvd.nist.gov
1
vcc glitch
security id key
protected firmware extraction
cve-2021-43327

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

4.6

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

39.3%

An issue was discovered on Renesas RX65 and RX65N devices. With a VCC glitch, an attacker can extract the security ID key from the device. Then, the protected firmware can be extracted.

Affected configurations

Nvd
Node
renesasrx65n_firmwareMatch-
AND
renesasrx65nMatch-
Node
renesasrx65_firmwareMatch-
AND
renesasrx65Match-
VendorProductVersionCPE
renesasrx65n_firmware-cpe:2.3:o:renesas:rx65n_firmware:-:*:*:*:*:*:*:*
renesasrx65n-cpe:2.3:h:renesas:rx65n:-:*:*:*:*:*:*:*
renesasrx65_firmware-cpe:2.3:o:renesas:rx65_firmware:-:*:*:*:*:*:*:*
renesasrx65-cpe:2.3:h:renesas:rx65:-:*:*:*:*:*:*:*

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

4.6

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

39.3%

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