CVE-2021-43327 — MEDIUM (4.6)

Vulnerability Description

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.

CVSS Score

4.6

MEDIUM

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

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Renesas	Rx65N Firmware	-
Renesas	Rx65N	-
Renesas	Rx65 Firmware	-
Renesas	Rx65	-

References

https://www.collshade.fr/articles/reneshack/rx_glitch_article.htmlExploitThird Party Advisory
https://www.collshade.fr/articles/reneshack/rx_glitch_article.htmlExploitThird Party Advisory

FAQ

What is CVE-2021-43327?

CVE-2021-43327 is a vulnerability with a CVSS score of 4.6 (MEDIUM). 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.

How severe is CVE-2021-43327?

CVE-2021-43327 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-43327?

Check the references section above for vendor advisories and patch information. Affected products include: Renesas Rx65N Firmware, Renesas Rx65N, Renesas Rx65 Firmware, Renesas Rx65.