#VU50106 Improper access control in Apex One - CVE-2021-25233

Vulnerability identifier: #VU50106

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-25233

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apex One
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Trend Micro

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the web console on port 4343/TCP. A remote attacker can bypass implemented security restrictions and obtain information about the server and agents - such as hotfix information, logs and hostname.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apex One: 2019

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External links
https://success.trendmicro.com/solution/000284202
https://www.zerodayinitiative.com/advisories/ZDI-21-108/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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