Heap Buffer Out-of-Bounds Read in Avira Antivirus Engine

Executive Summary

This vulnerability is a heap buffer out-of-bounds read in the Avira Antivirus engine. It occurs when the engine scans a malformed Windows PE (Portable Executable) file. This flaw may allow an attacker to execute code locally or cause a denial-of-service condition in the antivirus engine process.

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Impact Analysis

The vulnerability can impact you by allowing local attackers to execute arbitrary code on your system or cause the antivirus engine to crash, resulting in a denial-of-service. This could compromise the security of your system by bypassing antivirus protections or causing system instability.

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Mitigation Strategies

To mitigate this vulnerability, update the Avira Antivirus engine to version 8.3.70.98 or later on all affected platforms including Windows, macOS, and Linux.

Avoid scanning malformed Windows PE files until the update is applied to prevent potential local code execution or denial-of-service.

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