CVE-2018-3968
Last modified
CVE-2018-3968 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Denx | U-Boot | >= 2013.07, <= 2014.07 | — |
| Denx | U-Boot | 2013.07 | Rc1 |
| Denx | U-Boot | 2014.07 | Rc1 |
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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