// For flags

CVE-2021-27260

Parallels Desktop Toolgate Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

3.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 16.0.1-48919. 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 read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12068.

Esta vulnerabilidad permite a atacantes locales divulgar información confidencial sobre las instalaciones afectadas de Parallels Desktop versión 16.0.1-48919. Un atacante primero debe obtener la capacidad de ejecutar código muy privilegiado en el sistema invitado de destino para explotar esta vulnerabilidad. El fallo específico se presenta dentro del componente Toolgate. El problema es debido a una falta de comprobación apropiada de los datos suministrados por el usuario, lo que puede resultar en una lectura más allá del final de un búfer asignado. Un atacante puede aprovechar esto junto con otras vulnerabilidades para escalar privilegios y ejecutar código arbitrario en el contexto del hypervisor. Era ZDI-CAN-12068

This vulnerability allows local attackers to disclose sensitive information 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 Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor.

*Credits: Reno Robert of Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-16 CVE Reserved
  • 2021-02-24 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
References (2)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Parallels
Search vendor "Parallels"
Parallels Desktop
Search vendor "Parallels" for product "Parallels Desktop"
16.0.1
Search vendor "Parallels" for product "Parallels Desktop" and version "16.0.1"
macos
Affected