CVE-2018-3968

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 21-03-2019 06:29

Last modified: - 19-04-2022 08:15

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

High

Attack complexity

Local

Attack vector

High

Availability

High

Confidentiality

High

Integrity

Low

Privileges required

Unchanged

Scope

None

User interaction

7.0

Base score

1.0

5.9

Exploitability score

Impact score

Verification logic

vendor=denx AND product=u-boot AND version=2014.07 AND update=rc1

vendor=denx AND product=u-boot AND version=2013.07 AND update=rc1

vendor=denx AND product=u-boot AND version=2013.07 AND update=rc2

vendor=denx AND product=u-boot AND version=2013.07 AND update=rc3

vendor=denx AND product=u-boot AND versionEndIncluding=2014.07 AND versionStartIncluding=2013.07

vendor=denx AND product=u-boot AND version=2014.07 AND update=rc2

Reference

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

Keywords

CVE-2018-3968

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2018-3968

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures