// For flags

CVE-2022-39319

Missing length validation in urbdrc channel in FreeRDP

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 are missing input length validation in the `urbdrc` channel. 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 y clientes de protocolos de escritorio remoto gratuitos. A las versiones afectadas de FreeRDP les falta la validación de la longitud de entrada en el canal `urbdrc`. Un servidor malicioso puede engañar a un cliente basado en FreeRDP para que lea datos fuera de enlace y los envíe de regreso 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-bound read vulnerability was discovered in FreeRDP due to improper input length validation in client/data_transfer.c in the urbdrc channel. A malicious server can trigger an out-of-bounds read by tricking 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
High
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
  • 2024-06-08 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
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