CVE-2020-20118

CVSS 3.1 Score 5.5 of 10 (medium)

Details

Published Jul 11, 2023
Updated: Jul 18, 2023
CWE ID 120

Summary

CVE-2020-20118 is a buffer overflow vulnerability affecting Avast AntiVirus versions prior to 19.7. An attacker can exploit this issue by crafting a specific request to the aswSnx.sys driver, leading to a denial of service. The vulnerability occurs due to insufficient bounds checking, allowing excess data to be written into a buffer. Successful exploitation of this flaw can result in the application crashing, causing a denial of service to the Avast AntiVirus software. This issue poses a risk to local users and should be addressed by applying the necessary patch or upgrade.

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