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OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5 plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.
CVSS 2.5EPSS 0.133%Riziko 0.25
Zobraziť zdroj- Zverejnené
- 2026-07-06 20:16:32
- Dotknuté verzie
- >=4.5.0,<4.11.0
- Typ
- Firmvér
- Vektor
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N