AVG AntiVirus Free icarus Arbitrary File Creation Denial of Service Vulnerability

July 29th, 2024
ZDI-24-1009 ZDI-CAN-22942

CVE ID

CVE-2024-7236

CVSS Score

5.3 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected Vendors

AVG

Affected Products

AntiVirus Free

Vulnerability Details

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of AVG AntiVirus Free. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the AVG Installer. By creating a symbolic link, an attacker can abuse the update functionality to create a file. An attacker can leverage this vulnerability to create a persistent denial-of-service condition on the system.

Additional Details

Fixed in Feb 24 Firmware Version 24.Xx


Disclosure Timeline

  • 2024-02-22 - Vulnerability reported to vendor
  • 2024-07-29 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated

Credit

Nicholas Zubrisky (@NZubrisky) and Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative

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