Improper access control in Avast Antivirus - CVE-2020-10861
Published: April 2, 2020
Vulnerability identifier: #VU26539
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-10861
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe). A remote attacker can bypass implemented security restrictions and delete arbitrary files from Avast Program Path via RPC, when Self Defense is Enabled.
Affected software
Avast Antivirus
How to mitigate CVE-2020-10861
Install updates from vendor's website.
Avast Antivirus - update to 20.1.2397