CVE-2018-3968

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-03-21 · updated 2026-06-17
Weakness: CWE-347

Description

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.

Affected products

u-boot: from 2013.07 through 2014.07; 2013.07-rc1, 2013.07-rc2, 2013.07-rc3, 2014.07-rc1, 2014.07-rc2

References

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

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