CVEvulnerability

CVE-2017-3226

6.4 MEDIUM Published 2018-07-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-07-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
6.4 MEDIUM — CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.4 MEDIUM — AV:L/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-310, CWE-329

Description

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 configurations

• denx u-boot (< 2017.09)

Related

Weakness · not in database (1)

Weakness · CWE (1)

  • CWE-329 Generation of Predictable IV with CBC Mode weakness

References