CVE-2021-41159

21.10.2021, 19:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	5.8 MEDIUM	NETWORK	HIGH	HIGH	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 64%

Affected Products (NVD)

Vendor	Product	Version
freerdp	freerdp	𝑥 < 2.4.1

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

freerdp2

bookworm	2.10.0+dfsg1-1 fixed
bullseye	no-dsa
buster	ignored
sid	2.11.7+dfsg1-4 fixed
trixie	2.11.7+dfsg1-4 fixed

Ubuntu Releases

Ubuntu Product

Codename

freerdp

bionic	needs-triage
trusty	ignored
xenial	needs-triage

freerdp2

bionic	Fixed 2.2.0+dfsg1-0ubuntu0.18.04.2 released
focal	Fixed 2.2.0+dfsg1-0ubuntu0.20.04.2 released
hirsute	Fixed 2.3.0+dfsg1-1ubuntu0.1 released
impish	Fixed 2.3.0+dfsg1-2ubuntu0.1 released
jammy	Fixed 2.3.0+dfsg1-2ubuntu2 released
kinetic	Fixed 2.3.0+dfsg1-2ubuntu2 released
lunar	Fixed 2.3.0+dfsg1-2ubuntu2 released
mantic	Fixed 2.3.0+dfsg1-2ubuntu2 released
noble	Fixed 2.3.0+dfsg1-2ubuntu2 released
trusty	ignored
xenial	ignored

openSUSE / SLES Releases

openSUSE Product

Release

freerdp

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

freerdp-devel

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

freerdp-proxy

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

libfreerdp2

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

libwinpr2

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

winpr2-devel

suse enterprise desktop 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise desktop 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise desktop 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise sap 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise sap 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise server 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise server 15 SP5	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP3	2.1.2-150200.15.18.1 fixed
suse enterprise workstation 15 SP4	2.4.0-150400.3.6.1 fixed
suse enterprise workstation 15 SP5	2.4.0-150400.3.6.1 fixed

Red Hat Enterprise Linux Releases

Red Hat Product

Release

freerdp

RHEL 7	0:2.1.1-5.el7_9 fixed
RHEL 8	2:2.2.0-7.el8_5 fixed
RHEL 8.1 E4S	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.1 EUS	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.2 AUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 E4S	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 EUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 TUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.4 AUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 E4S	2:2.2.0-6.el8_4 fixed
RHEL 8.4 EUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 TUS	2:2.2.0-6.el8_4 fixed

freerdp-devel

RHEL 7	0:2.1.1-5.el7_9 fixed
RHEL 8	2:2.2.0-7.el8_5 fixed
RHEL 8.1 E4S	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.1 EUS	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.2 AUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 E4S	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 EUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 TUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.4 AUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 E4S	2:2.2.0-6.el8_4 fixed
RHEL 8.4 EUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 TUS	2:2.2.0-6.el8_4 fixed

freerdp-libs

RHEL 7	0:2.1.1-5.el7_9 fixed
RHEL 8	2:2.2.0-7.el8_5 fixed
RHEL 8.1 E4S	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.1 EUS	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.2 AUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 E4S	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 EUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 TUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.4 AUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 E4S	2:2.2.0-6.el8_4 fixed
RHEL 8.4 EUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 TUS	2:2.2.0-6.el8_4 fixed

libwinpr

RHEL 7	0:2.1.1-5.el7_9 fixed
RHEL 8	2:2.2.0-7.el8_5 fixed
RHEL 8.1 E4S	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.1 EUS	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.2 AUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 E4S	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 EUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 TUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.4 AUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 E4S	2:2.2.0-6.el8_4 fixed
RHEL 8.4 EUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 TUS	2:2.2.0-6.el8_4 fixed

libwinpr-devel

RHEL 7	0:2.1.1-5.el7_9 fixed
RHEL 8	2:2.2.0-7.el8_5 fixed
RHEL 8.1 E4S	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.1 EUS	2:2.0.0-46.rc4.el8_1.5 fixed
RHEL 8.2 AUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 E4S	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 EUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.2 TUS	2:2.0.0-46.rc4.el8_2.5 fixed
RHEL 8.4 AUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 E4S	2:2.2.0-6.el8_4 fixed
RHEL 8.4 EUS	2:2.2.0-6.el8_4 fixed
RHEL 8.4 TUS	2:2.2.0-6.el8_4 fixed

Common Weakness Enumeration

CWE-787 - Out-of-bounds Write
The software writes data past the end, or before the beginning, of the intended buffer.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/

https://security.gentoo.org/glsa/202210-24

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWJXQOWKNR7O5HM2HFJOM4GBUFPTE3RG/

https://security.gentoo.org/glsa/202210-24