CVE Vulnerability

CVE-2021-34857

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 Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13601.

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://www.zerodayinitiative.com/advisories/ZDI-21-940/ Third Party Advisory VDB Entry
https://kb.parallels.com/125013 Patch Vendor Advisory
Configurations

Configuration 1

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

Published : 2021-10-25 05:15

Updated : 2021-10-27 05:47

NVD link : CVE-2021-34857

Mitre link : CVE-2021-34857

Products Affected

Parallels

Parallels Desktop

CWE
CWE-787