Privilege escalation via LogoFAIL attack in Insyde kernel

1) Input validation error

EUVDB-ID: #VU83973

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-40238

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A local user with write access to the ESP of the victim device can exploit by storing a maliciously crafted logo image.

The vulnerability was dubbed LogoFAIL.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Insyde Kernel: before 5.2 05.28.47

CPE2.3

• cpe:2.3:o:insyde_software:insyde_kernel:*:*:*:*:*:*:*:

External links

http://www.insyde.com/security-pledge/SA-2023053
http://binarly.io/posts/finding_logofail_the_dangers_of_image_parsing_during_system_boot/index.html
http://binarly.io/posts/finding_logofail_the_dangers_of_image_parsing_during_system_boot/index.html

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.