Das U-Boot up to 2021.04-rc1 Boot Loader Local Privilege Escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Das U-Boot up to 2021.04-rc1 and classified as problematic. Impacted is an unknown function of the component Boot Loader. This manipulation causes an unknown weakness. This vulnerability is handled as CVE-2021-27097. It is possible to launch the attack on the local host. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Das U-Boot up to 2021.04-rc1 and classified as problematic. Affected by this vulnerability is an unknown part of the component Boot Loader. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/18/2021 as 6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-27097. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 266339 (Debian dla-4320 : u-boot - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2021.04-rc2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (266339). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (MITRE): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 266339
Nessus Name: Debian dla-4320 : u-boot - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Das U-Boot 2021.04-rc2
Patch: github.com

Timelineinfo

02/10/2021 🔍
02/18/2021 +8 days 🔍
02/18/2021 +0 days 🔍
11/03/2025 +1719 days 🔍

Sourcesinfo

Advisory: 6f3c2d8aa5e6cbd80b5e869bbbddecb66c329d01
Status: Confirmed

CVE: CVE-2021-27097 (🔍)
GCVE (CVE): GCVE-0-2021-27097
GCVE (VulDB): GCVE-100-170131

Entryinfo

Created: 02/18/2021 07:55
Updated: 11/03/2025 22:53
Changes: 02/18/2021 07:55 (37), 03/03/2021 10:01 (5), 03/03/2021 10:06 (8), 10/02/2025 13:04 (17), 11/03/2025 22:53 (21)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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