(Pwn2Own) Oracle VirtualBox OHCI USB Controller Race Condition Local Privilege Escalation Vulnerability

April 30th, 2025
ZDI-25-257 ZDI-CAN-23786

CVE ID

CVE-2024-21113

CVSS Score

8.2 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Vendors

Oracle

Affected Products

VirtualBox

Vulnerability Details

This vulnerability allows local attackers to escalate privileges 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 implementation of the virtual OHCI USB controller. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary 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/cpuapr2024.html

Disclosure Timeline

  • 2024-03-28 - Vulnerability reported to vendor
  • 2025-04-30 - Coordinated public release of advisory
  • 2025-04-30 - Advisory Updated

Credit

dungdm(@_piers2) of Viettel Cyber Security

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