CVE-2018-3968
First published: Thu Mar 21 2019(Updated: )
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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| DENX U-Boot | >=2013.07<=2014.07 | |
| DENX U-Boot | =2013.07-rc1 | |
| DENX U-Boot | =2013.07-rc2 | |
| DENX U-Boot | =2013.07-rc3 | |
| DENX U-Boot | =2014.07-rc1 | |
| DENX U-Boot | =2014.07-rc2 |
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Frequently Asked Questions
What is the severity of CVE-2018-3968?
The severity of CVE-2018-3968 is high (7 out of 10).
Which software versions are affected by CVE-2018-3968?
The affected versions of the software are from 2013.07-rc1 to 2014.07-rc2.
How does CVE-2018-3968 impact U-Boot's verified boot protection?
The vulnerability allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel.
What is the Common Weakness Enumeration (CWE) ID for CVE-2018-3968?
The Common Weakness Enumeration (CWE) ID for CVE-2018-3968 is CWE-347.
Is there a fix available for CVE-2018-3968?
It is recommended to update to a fixed version of Das U-Boot to mitigate CVE-2018-3968.
- collector/nvd-index
- agent/severity
- agent/references
- agent/author
- vendor/denx
- canonical/denx u-boot
- version/denx u-boot/2013.07
- version/denx u-boot/2014.07
- version/denx u-boot/2013.07-rc1
- version/denx u-boot/2013.07-rc2
- version/denx u-boot/2013.07-rc3
- version/denx u-boot/2014.07-rc1
- version/denx u-boot/2014.07-rc2