Advisory Details

March 13th, 2020

Parallels Desktop xHCI Integer Overflow Privilege Escalation Vulnerability

ZDI-20-295
ZDI-CAN-10032

CVE ID CVE-2020-8874
CVSS SCORE 7.5, (AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H)
AFFECTED VENDORS Parallels
AFFECTED PRODUCTS Desktop
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. 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 xHCI component. 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

Fixed in version 15.1.3 (47255)


DISCLOSURE TIMELINE
  • 2020-02-21 - Vulnerability reported to vendor
  • 2020-03-13 - Coordinated public release of advisory
CREDIT Reno Robert
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