View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2017-3225 negligible priority: Ubuntu including 1 source packages (u-boot), 10 status rows across 10 suites (artful, bionic, cosmic, disco, eoan, focal, trusty, upstream, xenial, zesty): ignored 5, not-affected 3, DNE 1, needs-triage 1.
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.