Vulnerability Monitor

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CVE-2020-8961

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.

Published

2020-04-09T20:15:12.403

Last Modified

2024-11-21T05:39:44.950

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	avira	free_antivirus	< 15.0.2004.1825	Yes

References

https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows Release Notes, Vendor Advisory ([email protected])
https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-Windows Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)