CVE-2021-34987CWE-120

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.5.1 (49187)

High · published July 15, 2022

CVSS v3.0
8.2
EPSS
0%
Percentile
26.3
In the wild
Unconfirmed
What it is

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.5.1 (49187). 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 HDAudio virtual device. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-14969.

The record
Technical detail
CVSS v3.0
8.2 · HIGH
Vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00341 · 26.3th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2022-07-15T19:05Z
EPSS history
Timeline
  • 15 JUL 19:05Z
    This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.5.1 (49187)
    cvelistv5