CVE-2021-41160

Publication date 21 October 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
freerdp	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Ignored
freerdp2	24.04 LTS noble	Fixed 2.3.0+dfsg1-2ubuntu2
	23.10 mantic	Fixed 2.3.0+dfsg1-2ubuntu2
	23.04 lunar	Fixed 2.3.0+dfsg1-2ubuntu2
	22.10 kinetic	Fixed 2.3.0+dfsg1-2ubuntu2
	22.04 LTS jammy	Fixed 2.3.0+dfsg1-2ubuntu2
	21.10 impish	Fixed 2.3.0+dfsg1-2ubuntu0.1
	21.04 hirsute	Fixed 2.3.0+dfsg1-1ubuntu0.1
	20.04 LTS focal	Fixed 2.2.0+dfsg1-0ubuntu0.20.04.2
	18.04 LTS bionic	Fixed 2.2.0+dfsg1-0ubuntu0.18.04.2
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Ignored

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
freerdp2	Upstream: 217e0ca

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-5154-1
FreeRDP vulnerabilities
23 November 2021