Bug 2016412 (CVE-2021-41160)

Summary:	CVE-2021-41160 freerdp: improper region checks in all clients allow out of bound write to memory
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	extras-orphan, negativo17, oholy, pahan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	FreeRDP 2.4.1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the FreeRDP client where it fails to validate input data when using connections with GDI or SurfaceCommands. This flaw could allow a malicious server sending graphics updates to a client to cause an out of bounds write in client memory using a specially crafted input. The highest threat from this flaw is that it could allow arbitrary code to be executed on the target system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-10 20:31:26 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2016415, 2016413, 2016414, 2017951, 2017952, 2017953, 2017954, 2017955, 2017956, 2017957
Bug Blocks:	2016407

Description Marian Rehak 2021-10-21 13:21:59 UTC

The vulnerability exists due to a boundary error when processing connections with GDI or SurfaceCommands. A remote server can send specially crafted data to the client, trigger an out-of-bounds write and execute arbitrary code on the target system.

External Reference:

https://www.cybersecurity-help.cz/vulnerabilities/57584/

Comment 1 Marian Rehak 2021-10-21 13:24:07 UTC

Created freerdp tracking bugs for this issue:

Affects: fedora-all [bug 2016413]


Created freerdp1.2 tracking bugs for this issue:

Affects: epel-7 [bug 2016415]
Affects: fedora-33 [bug 2016414]

Comment 2 Doran Moppert 2021-10-25 05:24:12 UTC

Upstream PR:

https://github.com/FreeRDP/FreeRDP/pull/7349

Comment 4 errata-xmlrpc 2021-11-11 09:50:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:4620 https://access.redhat.com/errata/RHSA-2021:4620

Comment 5 errata-xmlrpc 2021-11-11 10:03:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4622 https://access.redhat.com/errata/RHSA-2021:4622

Comment 6 errata-xmlrpc 2021-11-11 10:03:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:4621 https://access.redhat.com/errata/RHSA-2021:4621

Comment 7 errata-xmlrpc 2021-11-11 10:11:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2021:4623 https://access.redhat.com/errata/RHSA-2021:4623

Comment 8 errata-xmlrpc 2021-11-11 10:19:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:4619 https://access.redhat.com/errata/RHSA-2021:4619

Comment 10 Product Security DevOps Team 2022-03-10 20:31:24 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-41160