Vulnerability Details CVE-2021-44149
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 25.7%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 4.6
References
- https://github.com/OP-TEE/optee_os/tags
- https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0002-OP-TEE_TrustZone_bypass_at_wakeup.txt
- https://github.com/OP-TEE/optee_os/tags
- https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0002-OP-TEE_TrustZone_bypass_at_wakeup.txt
Products affected by CVE-2021-44149
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cpe:2.3:h:nxp:i.mx_6ultralite:-
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cpe:2.3:o:trustedfirmware:op-tee:-
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cpe:2.3:o:trustedfirmware:op-tee:0.1.0
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cpe:2.3:o:trustedfirmware:op-tee:0.2.0
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cpe:2.3:o:trustedfirmware:op-tee:0.3.0
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cpe:2.3:o:trustedfirmware:op-tee:1.0.0
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cpe:2.3:o:trustedfirmware:op-tee:1.0.1
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cpe:2.3:o:trustedfirmware:op-tee:1.1.0
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cpe:2.3:o:trustedfirmware:op-tee:2.0.0
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cpe:2.3:o:trustedfirmware:op-tee:2.1.0
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cpe:2.3:o:trustedfirmware:op-tee:2.2.0
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cpe:2.3:o:trustedfirmware:op-tee:2.3.0
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cpe:2.3:o:trustedfirmware:op-tee:2.4.0
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cpe:2.3:o:trustedfirmware:op-tee:2.5.0
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cpe:2.3:o:trustedfirmware:op-tee:2.6.0
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cpe:2.3:o:trustedfirmware:op-tee:3.0.0
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cpe:2.3:o:trustedfirmware:op-tee:3.1.0
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cpe:2.3:o:trustedfirmware:op-tee:3.10.0
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cpe:2.3:o:trustedfirmware:op-tee:3.11.0
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cpe:2.3:o:trustedfirmware:op-tee:3.12.0
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cpe:2.3:o:trustedfirmware:op-tee:3.13.0
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cpe:2.3:o:trustedfirmware:op-tee:3.14.0
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cpe:2.3:o:trustedfirmware:op-tee:3.15.0
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cpe:2.3:o:trustedfirmware:op-tee:3.2.0
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cpe:2.3:o:trustedfirmware:op-tee:3.3.0
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cpe:2.3:o:trustedfirmware:op-tee:3.4.0
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cpe:2.3:o:trustedfirmware:op-tee:3.5.0
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cpe:2.3:o:trustedfirmware:op-tee:3.6.0
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cpe:2.3:o:trustedfirmware:op-tee:3.7.0
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cpe:2.3:o:trustedfirmware:op-tee:3.8.0
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cpe:2.3:o:trustedfirmware:op-tee:3.9.0