ZDI-18-961: Trend Micro Maximum Security ID_AMSP_MASTER Deserialization of Untrusted Data Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on vulnerable installations of Trend Micro Maximum Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within processing of ID_AMSP_MASTER requests in the service process coreServiceShell.exe. When parsing the request buffer, the process does not properly validate user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code under the context of SYSTEM.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Trend Micro Maximum Security 2022 |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-18-961?
ZDI-18-961 has been classified with a high severity due to its potential to allow local privilege escalation.
How do I fix ZDI-18-961?
To fix ZDI-18-961, it is recommended to update Trend Micro Maximum Security to the latest version that addresses this vulnerability.
Who is affected by ZDI-18-961?
ZDI-18-961 affects users of Trend Micro Maximum Security 2022 who have not applied available patches.
What type of attack does ZDI-18-961 enable?
ZDI-18-961 enables local attackers to escalate their privileges after executing low-privileged code on the system.
What should I do if I cannot update Trend Micro Maximum Security for ZDI-18-961?
If you cannot update, temporarily limit access to the affected system and monitor for unusual activities until an update can be applied.
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