Advisory Details

April 29th, 2019

(Pwn2Own) Oracle VirtualBox e1000 Integer Overflow Privilege Escalation Vulnerability

ZDI-19-425
ZDI-CAN-8363

CVE ID CVE-2019-2722
CVSS SCORE 6.7, (AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Oracle
AFFECTED PRODUCTS VirtualBox
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on vulnerable installations of Oracle VirtualBox. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of virtualized e1000 devices. 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 vulnerability to escalate privileges and 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/cpuapr2019-5072813.html
DISCLOSURE TIMELINE
  • 2019-03-20 - Vulnerability reported to vendor
  • 2019-04-29 - Coordinated public release of advisory
  • 2019-06-14 - Advisory Updated
CREDIT anhdaden of StarLabs
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