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MitreCVE-2021-36133

HistoryDec 07, 2021 - 9:15 p.m.

CVE-2021-36133

2021-12-0721:15:08

CWE-732

mitre

web.nvd.nist.gov

optee-os

csu driver

nxp i.mx

soc devices

security access

trustzone bypass

nonsecure world

dma

cve-2021-36133

nvd

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

Percentile

12.6%

JSON

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.

Affected configurations

Nvd

Node

linaroop-teeMatch-

AND

nxpi.mx_6Match-

nxpi.mx_6soloxMatch-

nxpi.mx_6ullMatch-

nxpi.mx_6ulzMatch-

nxpi.mx_7dsMatch-

nxpi.mx6sxMatch-

VendorProductVersionCPE
linaroop-tee-cpe:2.3:o:linaro:op-tee:-:*:*:*:*:*:*:*
nxpi.mx_6-cpe:2.3:h:nxp:i.mx_6:-:*:*:*:*:*:*:*
nxpi.mx_6solox-cpe:2.3:h:nxp:i.mx_6solox:-:*:*:*:*:*:*:*
nxpi.mx_6ull-cpe:2.3:h:nxp:i.mx_6ull:-:*:*:*:*:*:*:*
nxpi.mx_6ulz-cpe:2.3:h:nxp:i.mx_6ulz:-:*:*:*:*:*:*:*
nxpi.mx_7ds-cpe:2.3:h:nxp:i.mx_7ds:-:*:*:*:*:*:*:*
nxpi.mx6sx-cpe:2.3:h:nxp:i.mx6sx:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linaro	op-tee	-	cpe:2.3:o:linaro:op-tee:-:::::::*
nxp	i.mx_6	-	cpe:2.3:h:nxp:i.mx_6:-:::::::*
nxp	i.mx_6solox	-	cpe:2.3:h:nxp:i.mx_6solox:-:::::::*
nxp	i.mx_6ull	-	cpe:2.3:h:nxp:i.mx_6ull:-:::::::*
nxp	i.mx_6ulz	-	cpe:2.3:h:nxp:i.mx_6ulz:-:::::::*
nxp	i.mx_7ds	-	cpe:2.3:h:nxp:i.mx_7ds:-:::::::*
nxp	i.mx6sx	-	cpe:2.3:h:nxp:i.mx6sx:-:::::::*

References

github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0001-OP-TEE_TrustZone_bypass.txt

Social References

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

Percentile

12.6%

JSON

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