Oracle VirtualBox VMSVGA Heap-based Buffer Overflow Privilege Escalation Vulnerability

2021-04-22T00:00:00
ID ZDI-21-461
Type zdi
Reporter DongJun Shin
Modified 2021-04-23T00:00:00

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the VGA component. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor.