Input validation error in Avast Antivirus - CVE-2020-10863

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Main Vulnerability Database Vulnerabilities #VU26541

Input validation error in Avast Antivirus - CVE-2020-10863

Published: April 2, 2020


Vulnerability identifier: #VU26541
CSH Severity: Medium
CVSS v4.0: 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-2020-10863
CWE-ID: CWE-20
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 perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe). A remote attacker can trigger a shutdown via RPC from a Low Integrity process via TempShutDownMachine.


How to mitigate CVE-2020-10863

Install updates from vendor's website.

Sources