ZDI-20-506: Oracle VirtualBox vmsvgaR3FifoUpdateCursor Out-Of-Bounds Read Information Disclosure Vulnerability
This vulnerability allows local attackers to disclose sensitive information 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 vmsvgaR3FifoUpdateCursor function. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the hypervisor.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-20-506?
The severity of ZDI-20-506 is classified as medium, indicating a moderate impact if exploited.
How do I fix ZDI-20-506?
To fix ZDI-20-506, update your Oracle VirtualBox installation to the latest version that addresses this vulnerability.
Who is affected by ZDI-20-506?
Users of Oracle VirtualBox who allow high-privileged code execution on guest systems are affected by ZDI-20-506.
What type of attack does ZDI-20-506 enable?
ZDI-20-506 enables local attackers to disclose sensitive information from affected installations of Oracle VirtualBox.
What conditions are required to exploit ZDI-20-506?
Exploitation of ZDI-20-506 requires that the attacker has already gained the ability to execute high-privileged code on the guest system.