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

Author	Note
mdeslaur	malicious server could read arbitrary files

Priority

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)
	lunar	Released (2.8.1+dfsg1-1ubuntu1)
	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

References

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