CVE-2018-3968

An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.

CVSS v3.1

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0

8.2 HIGHCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS

0.28% chance of exploitation in the next 30 days, 20th percentile

Published

2019-03-21

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633

References

• CVE Record
• NVD entry

Related

• CVE-2018-3967
• CVE-2018-3969
• CVE-2018-3966
• CVE-2018-3970
• CVE-2018-3965
• CVE-2018-3971