Vulnerability Description
Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.exe which could lead to acquire antimalware (AM-PPL) protection.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Avast | Antivirus | < 20.8 |
References
- https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST3ExploitThird Party Advisory
- https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitVendor Advisory
- https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST3ExploitThird Party Advisory
- https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitVendor Advisory
FAQ
What is CVE-2021-45337?
CVE-2021-45337 is a vulnerability with a CVSS score of 8.8 (HIGH). Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.e...
How severe is CVE-2021-45337?
CVE-2021-45337 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-45337?
Check the references section above for vendor advisories and patch information. Affected products include: Avast Antivirus.