Improper access control in Avast Antivirus - CVE-2020-10868
Published: April 2, 2020
Vulnerability identifier: #VU26547
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-10868
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 che aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe). A remote attacker can bypass implemented security restrictions and launch the Repair App RPC call from a Low Integrity process.
Affected software
Avast Antivirus
How to mitigate CVE-2020-10868
Install updates from vendor's website.
Avast Antivirus - update to 20.1.2397