Advisory Details

April 16th, 2020

Oracle VirtualBox VBoxVGA VBoxVHWASurfaceBase Use-After-Free Privilege Escalation Vulnerability

CVE ID	CVE-2020-2758
CVSS SCORE	8.2, AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Oracle
AFFECTED PRODUCTS	VirtualBox
VULNERABILITY DETAILS	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 VBoxVGA graphics controller component. When handling the VBoxVHWASurfaceBase object, the process does not properly validate the existence of the object prior to performing operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor.
ADDITIONAL DETAILS	Oracle has issued an update to correct this vulnerability. More details can be found at: https://www.oracle.com/security-alerts/cpuapr2020.html
DISCLOSURE TIMELINE	2020-03-03 - Vulnerability reported to vendor 2020-04-16 - Coordinated public release of advisory
CREDIT	Calvin Fong (Lord_Idiot) of STAR Labs

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