CVE-2020-2758: Oracle VirtualBox VBoxVGA VBoxVHWASurfaceBase Use-After-Free Privilege Escalation Vulnerability
First published: Wed Apr 15 2020(Updated: )
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.
Credit: secalert_us@oracle.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle VM VirtualBox | <5.2.40 | |
| Oracle VM VirtualBox | >=6.0.0<6.0.20 | |
| Oracle VM VirtualBox | >=6.1.0<6.1.6 | |
| openSUSE Leap | =15.1 | |
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Reference Links
Frequently Asked Questions
What is CVE-2020-2758?
CVE-2020-2758 is a vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization that allows a high privileged attacker to escalate their privileges.
Which versions of Oracle VirtualBox are affected by CVE-2020-2758?
The affected versions are prior to 5.2.40, prior to 6.0.20, and prior to 6.1.6.
How severe is CVE-2020-2758?
CVE-2020-2758 has a severity score of 8.2, which is considered high.
How can CVE-2020-2758 be exploited?
CVE-2020-2758 can be easily exploited by a high privileged attacker with logon access to the infrastructure where Oracle VirtualBox is deployed.
Are there any references for CVE-2020-2758?
Yes, here are some references: http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00001.html, https://security.gentoo.org/glsa/202101-09, and https://www.oracle.com/security-alerts/cpuapr2020.html
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