Vulnerability Details

Avast Antivirus < 19.4 Link Following Vulnerability (Windows)

Published: 2019-11-01 14:45:00
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:L/Au:N/C:N/I:P/A:P

Detection Type:
Windows Registry

Solution Type:
Vendor Patch

Summary:
This host is running Avast Antivirus and is prone to a link following vulnerability.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
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

Impact:
The vulnerability 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 Versions:
Avast Antivirus prior to version 19.4.

Recommendations:
Update to Avast Antivirus version 19.4 or later.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2019-11230

CVE Analysis

https://www.mageni.net/cve/CVE-2019-11230

References:

http://www.mcerlane.co.uk/CVE-2019-11230

Severity
Low
CVSS Score
3.6
Published
2019-11-01
Modified
2019-11-07
Category
General

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