9.8
CRITICAL
CVE-2020-8961
"Avira Free-Antivirus Code Injection and File Manipulation Vulnerability"
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.

INFO

Published Date :

April 9, 2020, 8:15 p.m.

Last Modified :

July 21, 2021, 11:39 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-8961 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Avira free_antivirus
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-8961.

URL Resource
https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows Release Notes Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-8961 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-8961 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-94 NVD-CWE-noinfo
  • Initial Analysis by [email protected]

    Apr. 10, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows No Types Assigned https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows Release Notes, Vendor Advisory
    Added CWE NIST CWE-94
    Added CPE Configuration OR *cpe:2.3:a:avira:free_antivirus:*:*:*:*:*:*:*:* versions up to (excluding) 15.0.2004.1825
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-8961 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-8961 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.23 }} 0.00%

score

0.59556

percentile

CVSS31 - Vulnerability Scoring System
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