Improper access control in Avast Antivirus - CVE-2020-10861

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Main Vulnerability Database Vulnerabilities #VU26539

Improper access control in Avast Antivirus - CVE-2020-10861

Published: April 2, 2020


Vulnerability identifier: #VU26539
CSH Severity: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2020-10861
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Avast Antivirus
Software vendor:
Avast Software s.r.o.

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 delete arbitrary files from Avast Program Path via RPC, when Self Defense is Enabled.


Remediation

Install updates from vendor's website.

External links