Advisory Details

January 24th, 2019

Oracle VirtualBox crUnpackMap2d Integer Overflow Information Disclosure Vulnerability

ZDI-18-1449
ZDI-CAN-7228

CVE ID CVE-2018-3293
CVSS SCORE 3.8, AV:L/AC:L/PR:L/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 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 crUnpackMap2d method. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a 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/technetwork/security-advisory/cpuoct2018-4428296.html
DISCLOSURE TIMELINE
  • 2018-09-10 - Vulnerability reported to vendor
  • 2019-01-24 - Coordinated public release of advisory
CREDIT Root Object
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