CVE-2019-11230: 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…

PriorityP422medium4.4CVSS 3.0

AVLACLPRHUINSUCNIHAN

EPSS

0.54%

41.5th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
avast	antivirus	< 19.4	19.4

CVSS provenance

nvdv3.04.4MEDIUMCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

nvdv2.03.6LOWAV:L/AC:L/Au:N/C:N/I:P/A:P

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