漏洞信息
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Vulnerability Title
OP-TEE: RSA-OAEP padding oracle in Hisilicon HPRE driver enables plaintext recovery
Vulnerability Description
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-OAEP 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 Manger-style padding oracle that allows an attacker to recover RSA-OAEP plaintext with approximately 1000-2000 adaptive chosen ciphertext queries. Only affects plat-d06 with `CFG_HISILICON_ACC_V3=y`, which seems to be disabled by default. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Vulnerability Type
通过时间差异性导致的信息暴露
Vulnerability Title
OP-TEE optee_os 侧信道信息泄露漏洞
Vulnerability Description
OP-TEE optee_os是OP-TEE的安全操作系统。 OP-TEE optee_os 4.5.0版本至4.11.0之前版本存在日志信息泄露漏洞,该漏洞源于Hisilicon HPRE加密驱动程序中RSA-OAEP解密实现使用非常量时间memcmp进行标签哈希验证,并且存在多个可区分的错误路径,形成香草填充预言机攻击。
CVSS Information
N/A
Vulnerability Type
N/A