CVE-2019-17449 : Exploit Details and Defense Strategies

A DLL side-loading vulnerability affecting Avira Software Updater versions prior to 2.0.6.21094, which the vendor considers invalid due to the need for administrator privileges.

Understanding CVE-2019-17449

This CVE involves a disputed DLL side-loading attack in Avira Software Updater.

What is CVE-2019-17449?

The vulnerability allows a DLL side-loading attack in Avira Software Updater versions before 2.0.6.21094. The vendor disputes its severity, citing the requirement for administrator privileges and limited privileges gained.

The Impact of CVE-2019-17449

The impact is disputed due to the vendor's claim that successful exploitation would only grant SYSTEM privileges and necessitate administrator access.

Technical Details of CVE-2019-17449

This section provides technical insights into the vulnerability.

Vulnerability Description

The DLL side-loading attack can be executed in Avira Software Updater versions prior to 2.0.6.21094, although the vendor disputes its validity.

Affected Systems and Versions

Affected: Avira Software Updater versions before 2.0.6.21094
Not affected: Versions from 2.0.6.21094 onwards

Exploitation Mechanism

Requires administrator privileges
Successful exploitation grants SYSTEM privileges

Mitigation and Prevention

Protective measures to address the CVE.

Immediate Steps to Take

Update Avira Software Updater to version 2.0.6.21094 or later
Monitor for any suspicious activities related to DLL side-loading

Long-Term Security Practices

Implement the principle of least privilege to limit administrator access
Regularly review and update security policies and practices

Patching and Updates

Stay informed about security advisories from Avira
Apply patches and updates promptly to mitigate potential vulnerabilities