CVE-2022-40143

A link following local privilege escalation vulnerability in Trend Micro Apex One and Trend Micro Apex One as a Service servers could allow a local attacker to abuse an insecure directory that could allow a low-privileged user to run arbitrary code with elevated privileges. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• https://success.trendmicro.com/solution/000291528
• https://www.zerodayinitiative.com/advisories/ZDI-22-1191/