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CVE-2022-39347

Published: 17 November 2022

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing path canonicalization and base path check for `drive` channel. A malicious server can trick a FreeRDP based client to read files outside the shared directory. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/drive`, `/drives` or `+home-drive` redirection switch.

Notes

AuthorNote
mdeslaur
malicious server could read arbitrary files

Priority

Medium

Cvss 3 Severity Score

5.7

Score breakdown

Status

Package Release Status
freerdp
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(out of standard support)
upstream Needs triage

xenial Needed

freerdp2
Launchpad, Ubuntu, Debian
bionic
Released (2.2.0+dfsg1-0ubuntu0.18.04.4)
focal
Released (2.2.0+dfsg1-0ubuntu0.20.04.4)
jammy
Released (2.6.1+dfsg1-3ubuntu2.3)
kinetic
Released (2.8.1+dfsg1-0ubuntu1.1)
trusty Ignored
(out of standard support)
upstream Needs triage

xenial Ignored
(out of standard support)
Patches:
upstream: https://github.com/FreeRDP/FreeRDP/commit/5101fbbba36d05a7c6a0ca72db7491036c8ccad7
upstream: https://github.com/FreeRDP/FreeRDP/commit/3ac3a2ce9e965b334a446bc225ae85acb493e06e
upstream: https://github.com/FreeRDP/FreeRDP/commit/0a62aba0caba88775ceb24211feb8eb319c034c1
upstream: https://github.com/FreeRDP/FreeRDP/commit/027424c2c6c0991cb9c22f9511478229c9b17e5d

Severity score breakdown

Parameter Value
Base score 5.7
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N