ZDI-CAN-23731: ZDI-24-1005: (0Day) Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. 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 Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
Other sources
This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2024-7233.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-23731?
ZDI-CAN-23731 is classified as a privilege escalation vulnerability.
How do I fix ZDI-CAN-23731?
To fix ZDI-CAN-23731, ensure that you update your Avast Free Antivirus to the latest version provided by Avast.
Who is affected by ZDI-CAN-23731?
ZDI-CAN-23731 affects users of Avast Free Antivirus running vulnerable versions.
What type of attack does ZDI-CAN-23731 facilitate?
ZDI-CAN-23731 facilitates local privilege escalation for attackers with low-privileged code execution.
What must an attacker do to exploit ZDI-CAN-23731?
An attacker must first gain the ability to execute low-privileged code on the target system to exploit ZDI-CAN-23731.