VulnerabilityModified
CVE-2020-8961
Thus, code injection can be used to turn off this feature.
CRITICAL 9.8EPSS 2.05%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.05%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.05% probability · 80th percentile
- CISA KEV
- Not listed
- Affected
- avira/free antivirus
- Source
- cve@mitre.org
References
- https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-WindowsRelease Notes, Vendor Advisory
- https://support.avira.com/hc/en-us/articles/360000109798-Avira-Antivirus-for-WindowsRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.