Improper access control in Avast Antivirus - CVE-2020-10868

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Main Vulnerability Database Vulnerabilities #VU26547

Improper access control in Avast Antivirus - CVE-2020-10868

Published: April 2, 2020


Vulnerability identifier: #VU26547
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2020-10868
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 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.


How to mitigate CVE-2020-10868

Install updates from vendor's website.

Sources