CVE-2020-8961 Information

Description

An issue was discovered in Avira Free-Antivirus before 15.0.2004.1825. The Self-Protection feature does not prohibit a write operation from an external process. Thus code injection can be used to turn off this feature. After that one can construct an event that will modify a file at a specific location and pass this event to the driver thereby defeating the anti-virus functionality.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8