// For flags

CVE-2022-39320

Heap buffer overflow in urbdrc channel

Severity Score

4.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch.

FreeRDP es una librería de protocolos de escritorio remoto gratuitos y clientes. Las versiones afectadas de FreeRDP pueden intentar sumar números enteros en tipos demasiado estrechos, lo que lleva a la asignación de un búfer demasiado pequeño que contiene los datos escritos. Un servidor malicioso puede engañar a un cliente basado en FreeRDP para que lea datos fuera de enlace y los envíe de vuelta al servidor. Este problema se solucionó en la versión 2.9.0 y se recomienda a todos los usuarios que actualicen. Los usuarios que no puedan actualizar no deben usar el interruptor de redirección `/usb`.

An out-of-bounds read vulnerability exists due to a boundary condition within the urbdrc channel. Attempting an integer addition on narrow types leads to the allocation of a buffer too small to hold the data written. A malicious server can trick a FreeRDP based client to read out-of-bound data and send it back to the server.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-09-02 CVE Reserved
  • 2022-11-16 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-10-02 EPSS 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
Freerdp
Search vendor "Freerdp"
Freerdp
Search vendor "Freerdp" for product "Freerdp"
< 2.9.0
Search vendor "Freerdp" for product "Freerdp" and version " < 2.9.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
36
Search vendor "Fedoraproject" for product "Fedora" and version "36"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected