Cryptographic issues in Universal Boot Loader (U-Boot) - CVE-2017-3225
Published: July 24, 2018 / Updated: July 17, 2020
Vulnerability identifier: #VU31262
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-3225
CWE-ID: CWE-310
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. For devices utilizing this environment encryption mode, U-Boot's use of a zero initialization vector may allow attacks against the underlying cryptographic implementation and allow an attacker to decrypt the data. Das U-Boot's AES-CBC encryption feature uses a zero (0) initialization vector. This allows an attacker to perform dictionary attacks on encrypted data produced by Das U-Boot to learn information about the encrypted data.
Affected software
Universal Boot Loader (U-Boot)
How to mitigate CVE-2017-3225
Install update from vendor's website.
Universal Boot Loader (U-Boot) - update to 2017.09