Input validation error in DENX U-Boot

1) Input validation error

EUVDB-ID: #VU30331

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10648

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

Das U-Boot through 2020.01 allows attackers to bypass verified boot restrictions and subsequently boot arbitrary images by providing a crafted FIT image to a system configured to boot the default configuration.

Mitigation

Install update from vendor's website.

Vulnerable software versions

U-Boot: 2018.0 - 2018.01

External links

http://www.openwall.com/lists/oss-security/2020/03/18/5
http://github.com/u-boot/u-boot/commits/master
http://labs.f-secure.com/advisories/das-u-boot-verified-boot-bypass/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.