Advisory Details

April 16th, 2020

Oracle VirtualBox vmsvgaR3FifoUpdateCursor Out-Of-Bounds Read Information Disclosure Vulnerability

CVE ID	CVE-2020-2748
CVSS SCORE	3.2, AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
AFFECTED VENDORS	Oracle
AFFECTED PRODUCTS	VirtualBox
VULNERABILITY DETAILS	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.
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	anhdaden & Calvin Fong (Lord_Idiot) of STAR Labs

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