CVE-2023-40188

Publication date 31 August 2023

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `general_LumaToYUV444` function. This Out-Of-Bounds Read occurs because processing is done on the `in` variable without checking if it contains data of sufficient length. Insufficient data for the `in` variable may cause errors or crashes. 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 issue.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
freerdp2	23.10 mantic	Fixed 2.10.0+dfsg1-1.1ubuntu1
	23.04 lunar	Fixed 2.10.0+dfsg1-1ubuntu0.2
	22.04 LTS jammy	Fixed 2.6.1+dfsg1-3ubuntu2.4
	20.04 LTS focal	Fixed 2.2.0+dfsg1-0ubuntu0.20.04.5
	18.04 LTS bionic	Fixed 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

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Severity score breakdown

Parameter	Value
Base score	9.1 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-6401-1
FreeRDP vulnerabilities
4 October 2023