CVE-2018-3968

2019-03-2116:36:03

talos

www.cve.org

8.2 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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.

CNA Affected

[
  {
    "product": "Das U-Boot",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Das U-Boot 2013.07-rc1 to 2014.07-rc2 OCTEON-SDK 3.1.2 to 5.1 CUJO Smart Firewall - Firmware version 7003"
      }
    ]
  }
]