medium6.4
CVE-2017-3226
Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Denx | U-Boot | before 2017.09 |