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.
2018-07-24T15:29:00.983
2024-11-21T03:25:04.597
Modified
CVSSv3.0: 6.4 (MEDIUM)
AV:L/AC:M/Au:N/C:P/I:P/A:P
3.4
6.4