Improper access control in Avast Antivirus - CVE-2020-10866

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Main Vulnerability Database Vulnerabilities #VU26543

Improper access control in Avast Antivirus - CVE-2020-10866

Published: April 2, 2020


Vulnerability identifier: #VU26543
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-10866
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Avast Software s.r.o.
Affected software:
Avast Antivirus

Detailed vulnerability description

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 enumerate the network interfaces and access points from a Low Integrity process via RPC.


How to mitigate CVE-2020-10866

Install updates from vendor's website.

Sources