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F-Secure Anti-Virus: executing DLL code via the installer
Synthesis of the vulnerability
An attacker can create a malicious install DLL, and then put it in the current directory of F-Secure Anti-Virus, in order to execute code.
Vulnerable products: F-Secure AV.
Severity of this weakness: 2/4.
Consequences of a hack: administrator access/rights, privileged access/rights.
Hacker's origin: intranet server.
Creation date: 16/05/2019.
Références of this bulletin: CVE-2019-11644, FSC-2019-2, VIGILANCE-VUL-29346.
Description of the vulnerability
The F-Secure Anti-Virus product uses external shared libraries (DLL).
However, if the working directory contains a malicious install DLL, it is automatically loaded.
An attacker can therefore create a malicious install DLL, and then put it in the current directory of F-Secure Anti-Virus, in order to execute code.
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