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Vulnerability CVE-2021-36133
Published: 2021-12-07
| 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. |
Type:
CWE-732
CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:N)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
3.6/10 |
4.9/10 |
3.9/10 |
| Exploit range |
Attack complexity |
Authentication |
Local |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
Partial |
None |
References: |
https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0001-OP-TEE_TrustZone_bypass.txt
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