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MitreCVE-2021-44149

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

CVE-2021-44149

2021-12-0721:15:08

mitre

web.nvd.nist.gov

cve-2021-44149

trusted firmware

op-tee

nxp i.mx6ul

trustzone bypass

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

Percentile

12.6%

JSON

An issue was discovered in Trusted Firmware OP-TEE Trusted OS through 3.15.0. The OPTEE-OS CSU driver for NXP i.MX6UL SoC devices lacks security access configuration for wakeup-related registers, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a v cycle.

Affected configurations

Nvd

Node

linaroop-teeRange≤3.15.0

AND

nxpi.mx_6ultraliteMatch-

VendorProductVersionCPE
linaroop-tee*cpe:2.3:o:linaro:op-tee:*:*:*:*:*:*:*:*
nxpi.mx_6ultralite-cpe:2.3:h:nxp:i.mx_6ultralite:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linaro	op-tee	*	cpe:2.3:o:linaro:op-tee::::::::
nxp	i.mx_6ultralite	-	cpe:2.3:h:nxp:i.mx_6ultralite:-:::::::*

References

github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0002-OP-TEE_TrustZone_bypass_at_wakeup.txt

github.com/OP-TEE/optee_os/tags

Social References

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

Percentile

12.6%

JSON

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