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Security Advisory - Immunet Antivirus DLL Hijacking Vulnerability Summary Immunet® is a malware and antivirus protection system that utilizes cloud computing to provide enhanced community-based security. Immunet Antivirus contains a DLL hijacking vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system. This vulnerability exists due to some DLL file is loaded by ‘ImmunetSetup.exe’ improperly. And it allows an attacker to load this DLL file of the attacker’s choosing that could execute arbitrary code without the user's knowledge. Affected Product: Immunet 3 Download Link: https://s3.amazonaws.com/immunet-site/production/ImmunetSetup.exe Impact Attacker can exploit the vulnerability to load a DLL file of the attacker's choosing that could execute arbitrary code. This may help attacker to Successful exploits the system if user creates shell as a DLL. Vulnerability Scoring Details The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/). Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C) Technique Details 1. Prerequisite: The attacker can access the device; 2. Attacking procedure: This vulnerability exists due to the way DLL files are loaded by Immunet Antivirus. It allows an attacker to load a DLL file of the attacker’s choosing that could execute arbitrary code without the user's knowledge. The specific flaw exists within the handling of some DLL file loading by the Immunet Antivirus process. Note : For more detail POC please check the mail send on firstname.lastname@example.org Credit: Sachin Wagh (tiger_tigerboy) Wsachin092@gmail.com