Privilege escalation via Lenovo preload directory



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-4706
CWE-ID CWE-276
Exploitation vector Local
Public exploit N/A
Vulnerable software
 RunOnce
Client/Desktop applications / Software for system administration

Vendor Lenovo

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect default permissions

EUVDB-ID: #VU81975

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4706

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

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

The vulnerability exists due to incorrect default permissions for the "C:\Windows\1Lenovo" directory. The Lenovo preloaded OOBE RunOnce registry keys are suppressed, preventing its removal. A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Install update from vendor's website.

Vulnerable software versions

RunOnce: All versions

CPE2.3 External links

http://support.lenovo.com/us/en/product_security/LEN-127385


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.



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