CVE Vulnerability

CVE-2021-27259

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.0.1-48919. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate 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 arbitrary code in the context of the hypervisor. Was ZDI-CAN-12021.

4.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.1 / Impact : 6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://kb.parallels.com/en/125013 Release Notes Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-212/ Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:a:parallels:parallels_desktop:16.0.1:*:*:*:*:macos:*:*
Information

Published : 2021-04-14 04:15

Updated : 2021-04-22 03:59

NVD link : CVE-2021-27259

Mitre link : CVE-2021-27259

Products Affected
No products.
CWE
CWE-190