Das U-Boot's AES-CBC encryption feature improperly handles an error condition and may allow attacks against the underlying cryptographic implementation and allow an attacker to decrypt the data

Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. Devices that make use of Das U-Boot's AES-CBC encryption feature using environment encryption (i.e., setting the configuration parameter CONFIG_ENV_AES=y) read environment variables from disk as the encrypted disk image is processed. An attacker with physical access to the device can manipulate the encrypted environment data to include a crafted two-byte sequence which triggers an error in environment variable parsing. This error condition is improperly handled by Das U-Boot, resulting in an immediate process termination with a debugging message.

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在CBC加密模式中未使用随机化IV向量

DENX Software Engineering Das U-Boot 加密问题漏洞

DENX Software Engineering Das U-Boot是德国DENX Software Engineering公司的一套可以从AES加密文件读取设备配置的引导加载程序。 DENX Software Engineering Das U-Boot中存在加密问题漏洞，该漏洞源于程序没有正确的处理错误的情况。本地攻击者可利用该漏洞获取敏感信息或造成进程突然中止。

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