#VU59107 Link following in Apex One - CVE-2021-44024

Vulnerability identifier: #VU59107

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-44024

CWE-ID: CWE-59

Exploitation vector: Local

Exploit availability: No

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

Vendor: Trend Micro

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insecure link following. A local user can create a specially crafted symbolic link and overwrite arbitrary files with SYSTEM privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apex One: CP B2049 - 2019

---

External links
https://success.trendmicro.com/solution/000289996
https://www.zerodayinitiative.com/advisories/ZDI-22-014/

---

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.