CVE Vulnerability

CVE-2021-34856

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). 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 virtio-gpu virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13581.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2 / Impact : 6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://kb.parallels.com/125013 Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-938/ Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:a:parallels:parallels_desktop:16.1.3:*:*:*:*:macos:*:*
Information

Published : 2021-10-25 05:15

Updated : 2022-10-24 02:23

NVD link : CVE-2021-34856

Mitre link : CVE-2021-34856

Products Affected

Parallels

Parallels Desktop

CWE
CWE-787