CVE-2017-3225 Weak cryptography in U-Boot
U-Boot's AES-CBC implementation uses a zero initialization vector, allowing attackers to decrypt environment data if encryption is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-3225?
CVE-2017-3225 is a medium-severity vulnerability in Das U-Boot, published on 24 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2017-3225?
It affects 1 product.
Products include Denx U-Boot.
How do I fix CVE-2017-3225?
No fix has been published for CVE-2017-3225 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-3225 being exploited?
There is no known exploitation of CVE-2017-3225 in the wild and no public exploit code.
Other vulnerabilities in Das U-Boot
Sources
Also known as DEBIAN-CVE-2017-3225, GHSA-x8ww-88gq-789c.