Executive Summary

This vulnerability exists in MailEnable versions prior to 10.54 where the administrative executable loads a DLL named MEAIAU.DLL from its installation directory without proper integrity checks or secure search order. A local attacker who has write access to that directory can place a malicious MEAIAU.DLL file, which will be loaded by the executable, allowing the attacker to execute arbitrary code with the privileges of the process.

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Impact Analysis

The vulnerability can lead to local arbitrary code execution by an attacker with write access to the installation directory. This means the attacker can run malicious code with the same privileges as the MailEnable administrative process, potentially compromising the system, escalating privileges, or causing other malicious effects.

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Mitigation Strategies

To mitigate this vulnerability, ensure that you upgrade MailEnable to version 10.54 or later, which addresses the unsafe DLL loading issue. Additionally, restrict write permissions to the MailEnable installation directory to prevent unauthorized users from placing malicious DLL files.

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