Your submission was sent successfully! Close

CVE-2017-3226

Published: 24 July 2018

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.

Priority

Negligible

CVSS 3 base score: 6.4

Status

Package Release Status
u-boot
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic Not vulnerable

cosmic Ignored
(reached end-of-life)
disco Ignored
(reached end-of-life)
eoan Ignored
(reached end-of-life)
focal Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

impish Not vulnerable

jammy Not vulnerable

precise Does not exist

trusty Does not exist
(trusty was not-affected [code not present])
upstream Needs triage

xenial Needed

zesty Ignored
(reached end-of-life)
Patches:
upstream: https://github.com/u-boot/u-boot/commit/c6831c74a9e9dbedc351de94d23d35188ae1a39b

Notes

AuthorNote
mdeslaur
xenial doesn't build with ENV_AES, and later releases removed
the code completely

References