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CVE-2021-41159

Published: 21 October 2021

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
freerdp
Launchpad, Ubuntu, Debian
bionic Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

freerdp2
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)
bionic
Released (2.2.0+dfsg1-0ubuntu0.18.04.2)
focal
Released (2.2.0+dfsg1-0ubuntu0.20.04.2)
hirsute
Released (2.3.0+dfsg1-1ubuntu0.1)
impish
Released (2.3.0+dfsg1-2ubuntu0.1)
jammy
Released (2.3.0+dfsg1-2ubuntu2)
kinetic
Released (2.3.0+dfsg1-2ubuntu2)
lunar
Released (2.3.0+dfsg1-2ubuntu2)
mantic
Released (2.3.0+dfsg1-2ubuntu2)
Patches:
upstream: https://github.com/FreeRDP/FreeRDP/pull/7366/commits/f0a0683fa6a3f696c4bc5ba88c128bc781c54895
upstream: https://github.com/FreeRDP/FreeRDP/commit/d39a7ba5c38e3ba3b99b1558dc2ab0970cbfb0c5

Severity score breakdown

Parameter Value
Base score 8.8
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