CVE-2018-3968
CVSS V2 Medium 4.4
CVSS V3 High 7
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.
Overview
- CVE ID
- CVE-2018-3968
- Assigner
- talos-cna@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-03-21T17:29:00
- Last Modified Date
- 2023-02-02T13:56:46
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:* | 1 | OR | 2013.07 | 2014.07 |
| cpe:2.3:a:denx:u-boot:2013.07:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:denx:u-boot:2013.07:rc2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:denx:u-boot:2013.07:rc3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:denx:u-boot:2014.07:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:denx:u-boot:2014.07:rc2:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- LOCAL
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 4.4
- Severity
- MEDIUM
- Exploitability Score
- 3.4
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7
- Base Severity
- HIGH
- Exploitability Score
- 1
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633 | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-3968 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3968 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 17:01:22 | Added to TrackCVE | |||
| 2022-12-03 18:30:31 | 2019-03-21T17:29Z | 2019-03-21T17:29:00 | CVE Published Date | updated |
| 2022-12-03 18:30:31 | 2022-04-19T18:15:30 | CVE Modified Date | updated | |
| 2022-12-03 18:30:31 | Undergoing Analysis | Vulnerability Status | updated | |
| 2023-02-02 15:08:25 | 2023-02-02T13:56:46 | CVE Modified Date | updated | |
| 2023-02-02 15:08:25 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |