Incorrect default permissions in Mitsubishi Electric GX Works3

1) Incorrect default permissions

EUVDB-ID: #VU81205

Risk: Low

CVSSv3.1: 8.5 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-4088

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A local attacker can execute arbitrary code on the system with elevated privileges.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

GX Works3: All versions

External links

http://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-010_en.pdf
http://www.cisa.gov/news-events/ics-advisories/icsa-23-269-03

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.