CVE-2019-11230
MEDIUMAvast Antivirus < 19.4 - Arbitrary File Rename via Symlink Attack on Update.log
Title source: llmDescription
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.
References (2)
Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
http://www.mcerlane.co.uk/CVE-2019-11230/
Third Party Advisory vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/109344
Scores
CVSS v3
4.4
EPSS
0.0054
EPSS Percentile
41.3%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-59
Status
published
Products (1)
avast/antivirus
< 19.4
Published
Jul 18, 2019
Tracked Since
Feb 18, 2026