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CVE-2023-39351

Published: 31 August 2023

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
freerdp2
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic
Released (2.2.0+dfsg1-0ubuntu0.18.04.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal
Released (2.2.0+dfsg1-0ubuntu0.20.04.5)
jammy
Released (2.6.1+dfsg1-3ubuntu2.4)
lunar
Released (2.10.0+dfsg1-1ubuntu0.2)
upstream
Released (2.11.0)
mantic
Released (2.10.0+dfsg1-1.1ubuntu1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H