CVE-2023-39351 FreeRDP Null Pointer Dereference leading denial of service

2023-08-3119:56:07

CWE-476

GitHub_M

www.cve.org

cve

freerdp

remote desktop protocol

apache license

null pointer dereference

crash

remotefx

rfx_process_message_tileset

rfx_allocate_tiles

vulnerability

upgrade

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

55.5%

JSON

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the rfx_process_message_tileset function, the program allocates tiles using rfx_allocate_tiles for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program crash. 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.

CNA Affected

[
  {
    "vendor": "FreeRDP",
    "product": "FreeRDP",
    "versions": [
      {
        "version": "< 2.11.0",
        "status": "affected"
      },
      {
        "version": ">= 3.0.0-beta1, < 3.0.0-beta3",
        "status": "affected"
      }
    ]
  }
]