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CVE-2018-1000205

Published: 26 June 2018

U-Boot contains a CWE-20: Improper Input Validation vulnerability in Verified boot signature validation that can result in Bypass verified boot. This attack appear to be exploitable via Specially crafted FIT image and special device memory functionality.

Notes

AuthorNote
mdeslaur
verified boot not used in Ubuntu, setting as "negligible"

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
u-boot
Launchpad, Ubuntu, Debian
impish Not vulnerable
(2020.04+dfsg-2ubuntu1)
groovy Not vulnerable
(2020.04+dfsg-2ubuntu1)
jammy Not vulnerable
(2020.04+dfsg-2ubuntu1)
xenial Needed

bionic Not vulnerable
(2019.07+dfsg-1ubuntu4~18.04.1)
focal Not vulnerable
(2019.07+dfsg-1ubuntu6)
kinetic Not vulnerable
(2020.04+dfsg-2ubuntu1)
lunar Not vulnerable
(2020.04+dfsg-2ubuntu1)
artful Ignored
(end of life)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
hirsute Not vulnerable
(2020.04+dfsg-2ubuntu1)
trusty Does not exist
(trusty was needed)
upstream Needs triage

mantic Not vulnerable
(2020.04+dfsg-2ubuntu1)
Patches:
upstream: https://github.com/u-boot/u-boot/commit/72239fc85f3eda078547956608c063ab965e90e9
upstream: https://github.com/u-boot/u-boot/commit/7346c1e192d63cd35f99c7e845e53c5d4d0bdc24
other: https://lists.denx.de/pipermail/u-boot/2018-June/330488.html

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N