Advisory Details

July 18th, 2018

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

ZDI-18-684
ZDI-CAN-6115

CVE ID CVE-2018-3055
CVSS SCORE 4.7, (AV:L/AC:M/Au:N/C:C/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 crUnpackExtendAreProgramsResidentNV method. 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 escalate privileges and execute code under the context of the hypervisor.

VENDOR RESPONSE Oracle has issued an update to correct this vulnerability. More details can be found at:
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
DISCLOSURE TIMELINE
  • 2018-05-29 - Vulnerability reported to vendor
  • 2018-07-18 - Coordinated public release of advisory
  • 2018-07-18 - Advisory Updated
CREDIT Niklas Baumstark
BACK TO ADVISORIES