Improper access control in Avast Antivirus - CVE-2020-10865
Published: April 2, 2020
Vulnerability identifier: #VU26537
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-10865
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 make arbitrary changes to the Components section of the "Stats.ini" file via RPC from a Low Integrity process.
Affected software
Avast Antivirus
How to mitigate CVE-2020-10865
Install updates from vendor's website.
Avast Antivirus - update to 20.1.2397