// For flags

CVE-2023-39350

Incorrect offset calculation leading to denial of service in FreeRDP

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

FreeRDP es una implementación libre del Protocolo de Escritorio Remoto (RDP), publicado bajo la licencia Apache. Este problema afecta sólo a los clientes. Desbordamiento incompleto de enteros que conduce al DOS (por ejemplo, aborto debido a `WINPR_ASSERT` con los indicadores de compilación predeterminados). Cuando se proporciona un blockLen insuficiente y no se realiza la validación de longitud adecuada, se produce un desbordamiento de enteros, lo que provoca una vulnerabilidad de denegación de servicio (DOS). Este problema se ha solucionado en las versiones 2.11.0 y 3.0.0-beta3. Se recomienda a los usuarios que actualicen. No se conocen soluciones para esta vulnerabilidad.

A flaw was found in FreeRDP. When an insufficient blockLen value is provided and proper length validation is not performed, an Integer Underflow can occur, leading to a Denial of Service (DOS).

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-07-28 CVE Reserved
  • 2023-08-31 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-08-02 First Exploit
  • 2024-10-02 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-191: Integer Underflow (Wrap or Wraparound)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Freerdp
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 Freerdp
Search vendor "Freerdp" for product "Freerdp"
 < 2.11.0
Search vendor "Freerdp" for product "Freerdp" and version " < 2.11.0"
-
Affected
Freerdp
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 Freerdp
Search vendor "Freerdp" for product "Freerdp"
 3.0.0
Search vendor "Freerdp" for product "Freerdp" and version "3.0.0"
beta1
Affected
Freerdp
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 Freerdp
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 3.0.0
Search vendor "Freerdp" for product "Freerdp" and version "3.0.0"
beta2
Affected
Debian
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 Debian Linux
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 10.0
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-
Affected
Fedoraproject
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 Fedora
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 37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected
Fedoraproject
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 Fedora
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 38
Search vendor "Fedoraproject" for product "Fedora" and version "38"
-
Affected
Fedoraproject
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 Fedora
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 39
Search vendor "Fedoraproject" for product "Fedora" and version "39"
-
Affected