Advisory Details

January 17th, 2019

Oracle VirtualBox svcGetBuffer Uninitialized Memory Information Disclosure Vulnerability

ZDI-19-046
ZDI-CAN-6904

CVE ID CVE-2019-2446
CVSS SCORE 5.5, (AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 svcGetBuffer method. The issue results from the lack of proper initialization of memory prior to accessing it. 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/cpujan2019-5072801.html
DISCLOSURE TIMELINE
  • 2018-07-23 - Vulnerability reported to vendor
  • 2019-01-17 - Coordinated public release of advisory
CREDIT Niklas Baumstark
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