CVE-2019-11230
First published: Thu Jul 18 2019(Updated: )
In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Avast AntiVirus | <19.4 |
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Frequently Asked Questions
What is CVE-2019-11230?
CVE-2019-11230 is a vulnerability in Avast Antivirus before version 19.4 that allows a local administrator to trick the product into renaming arbitrary files.
How can a local administrator exploit CVE-2019-11230?
A local administrator can exploit CVE-2019-11230 by replacing the Logs\Update.log file with a symlink, causing the product to rename the target of the symlink the next time it attempts to write to the log file.
What is the severity of CVE-2019-11230?
CVE-2019-11230 has a severity rating of medium with a CVSS score of 4.4.
Which version of Avast Antivirus is affected by CVE-2019-11230?
Avast Antivirus before version 19.4 is affected by CVE-2019-11230.
How can I fix CVE-2019-11230?
To fix CVE-2019-11230, update to Avast Antivirus version 19.4 or later.
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