Oracle VirtualBox crUnpackPixelMapfv Untrusted Pointer Dereference Privilege Escalation Vulnerability

2018-07-18T00:00:00
ID ZDI-18-690
Type zdi
Reporter Anonymous
Modified 2018-06-22T00:00:00

Description

This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Oracle VirtualBox. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the crUnpackPixelMapfv method. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to escalate privileges and execute code under the context of the hypervisor.