CVE-2021-36133 — HIGH (7.1)

Vulnerability Description

The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a DMA capable peripheral.

CVSS Score

7.1

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Linaro	Op-Tee	-
Nxp	I.Mx 6	-
Nxp	I.Mx 6Solox	-
Nxp	I.Mx 6Ull	-
Nxp	I.Mx 6Ulz	-
Nxp	I.Mx 7Ds	-
Nxp	I.Mx6Sx	-

Related Weaknesses (CWE)

CWE-732

References

https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-RefThird Party Advisory
https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-RefThird Party Advisory

FAQ

What is CVE-2021-36133?

CVE-2021-36133 is a vulnerability with a CVSS score of 7.1 (HIGH). The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/wri...

How severe is CVE-2021-36133?

CVE-2021-36133 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-36133?

Check the references section above for vendor advisories and patch information. Affected products include: Linaro Op-Tee, Nxp I.Mx 6, Nxp I.Mx 6Solox, Nxp I.Mx 6Ull, Nxp I.Mx 6Ulz.