// For flags

CVE-2021-21989

VMware Workstation ThinPrint TTCHeader Integer Overflow Information Disclosure Vulnerability

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

VMware Workstation (16.x prior to 16.1.2) and Horizon Client for Windows (5.x prior to 5.5.2) contain out-of-bounds read vulnerability in the Cortado ThinPrint component (TTC Parser). A malicious actor with access to a virtual machine or remote desktop may be able to exploit these issues leading to information disclosure from the TPView process running on the system where Workstation or Horizon Client for Windows is installed.

VMware Workstation (versiones 16.x anteriores a 16.1.2) y Horizon Client para Windows (versiones 5.x anteriores a 5.5.2) contienen una vulnerabilidad de lectura fuera de límites en el componente Cortado ThinPrint (TTC Parser). Un actor malicioso con acceso a una máquina virtual o un escritorio remoto puede ser capaz de explotar estos problemas conllevando a una divulgación de información del proceso TPView que se ejecuta en el sistema donde está instalado Workstation o Horizon Client para Windows

This vulnerability allows local attackers to disclose sensitive information on affected installations of VMware Workstation. 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 ThinPrint component. Crafted data in a font file can result in an integer overflow before reading from memory. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the hypervisor.

*Credits: Anonymous
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
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
  • 2021-01-04 CVE Reserved
  • 2021-05-24 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
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Vmware
Search vendor "Vmware"
Horizon Client
Search vendor "Vmware" for product "Horizon Client"
>= 5.0.0 < 5.5.2
Search vendor "Vmware" for product "Horizon Client" and version " >= 5.0.0 < 5.5.2"
-
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Vmware
Search vendor "Vmware"
Workstation
Search vendor "Vmware" for product "Workstation"
>= 16.0.0 < 16.1.2
Search vendor "Vmware" for product "Workstation" and version " >= 16.0.0 < 16.1.2"
-
Affected