Privilege escalation in Trend Micro Apex One and Worry-Free Business

1) OS Command Injection

EUVDB-ID: #VU80895

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-41179

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the third-party AV uninstaller module shipped with the software. A local user can execute arbitrary commands with elevated privileges.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apex One: CP B2049 - 2019

Worry-Free Business Security: Services - 11.0

CPE2.3

• cpe:2.3:a:trend_micro:apex_one:CP B2049:*:*:*:*:*:*:
• cpe:2.3:a:trend_micro:apex_one:CP B10071:*:*:*:*:*:*:
• cpe:2.3:a:trend_micro:apex_one:SP1 b11128:*:*:*:*:*:*:
• cpe:2.3:a:trend_micro:worry-free_business_security:Services:*:*:*:*:*:*:
• cpe:2.3:a:trend_micro:worry-free_business_security:xg:*:*:*:*:*:*:
• cpe:2.3:a:trend_micro:worry-free_business_security:9.5:B1525:*:*:*:*:*:

External links

http://success.trendmicro.com/dcx/s/solution/000294994?language=en_US
http://files.trendmicro.com/documentation/readme/Apex%20One/2020/apex_one_2019_win_p_b12380_EN_patch_Readme.html
http://files.trendmicro.com/documentation/wfbs/10.0/WFBS_100_SP1_WIN_ALL_Patch_2495.txt

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?

Yes. This vulnerability is being exploited in the wild.