Advisory Details

July 20th, 2020

Oracle VirtualBox e1000 Unintialized Memory Information Disclosure Vulnerability

ZDI-20-905
ZDI-CAN-11274

CVE ID CVE-2020-14703
CVSS SCORE 6.0, (AV:L/AC:L/PR:H/UI:N/S:C/C:H/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 e1000 component. 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/security-alerts/cpujul2020.html
DISCLOSURE TIMELINE
  • 2020-06-17 - Vulnerability reported to vendor
  • 2020-07-20 - Coordinated public release of advisory
CREDIT Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative
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