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
| Author | Note |
|---|---|
| mdeslaur | xenial doesn't build with ENV_AES, and later releases removed the code completely |