ZDI-CAN-22272: ZDI-24-1003: (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 file. 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-2024-7227.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-22272?
The severity of ZDI-CAN-22272 is categorized as a high-risk vulnerability due to potential privilege escalation.
How do I fix ZDI-CAN-22272?
To fix ZDI-CAN-22272, ensure that you update your Avast Free Antivirus to the latest version provided by the vendor.
What type of attack does ZDI-CAN-22272 enable?
ZDI-CAN-22272 enables local attackers to escalate privileges on systems where Avast Free Antivirus is installed.
What are the prerequisites for exploiting ZDI-CAN-22272?
An attacker must obtain the ability to execute low-privileged code on the target system to exploit ZDI-CAN-22272.
Which software is affected by ZDI-CAN-22272?
ZDI-CAN-22272 affects the Avast Free Antivirus software.