CVE-2019-11230

low-risk
Published 2019-07-18

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.4/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Avast

References (4)

Exploit http://www.mcerlane.co.uk/CVE-2019-11230/
Third Party Advisory http://www.securityfocus.com/bid/109344
Exploit http://www.mcerlane.co.uk/CVE-2019-11230/
Third Party Advisory http://www.securityfocus.com/bid/109344
20
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal