Description
In FreeRDP less than or equal to 2.1.2, an integer overflow exists due to missing input sanitation in rdpegfx channel. All FreeRDP clients are affected. The input rectangles from the server are not checked against local surface coordinates and blindly accepted. A malicious server can send data that will crash the client later on (invalid length arguments to a `memcpy`) This has been fixed in 2.2.0. As a workaround, stop using command line arguments /gfx, /gfx-h264 and /network:auto
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | <= 2.1.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 12 | freerdp2 | 2.2.0+dfsg1-1 | — |
| Debian 10 | freerdp2 | 2.3.0+dfsg1-2+deb10u3 | DLA-3606-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | freerdp2 | 2.2.0+dfsg1-0ubuntu0.20.04.1 | USN-4481-1 |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp2 | 2.2.0+dfsg1-0ubuntu0.18.04.1 | USN-4481-1 |
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | freerdp +4 | 2:2.2.0-1.el8 | RHSA-2021:1849 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | freerdp-devel | 2:2.2.0-1.el8 | ALSA-2021:1849 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | freerdp | 2:2.2.0-1.el8 | RLSA-2021:1849 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | freerdp | 2.1.2-15.10.1 | SUSE-SU-2020:2408-1 |
| SLES 15 SP1 | freerdp | 2.1.2-10.18.1 | SUSE-SU-2020:2409-1 |
| SLES 12 SP5 | freerdp | 2.1.2-12.20.1 | SUSE-SU-2020:2272-1 |
| SLES 12 SP5 | vinagre | 3.20.2-16.3.3 | SUSE-SU-2020:2272-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp2 | 2.4.0-2.1 | openSUSE-SU-2024:10768-1 |
| openSUSE Leap 15.1 | freerdp | 2.1.2-lp151.5.9.1 | openSUSE-SU-2020:1332-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | freerdp +1 | 2.2.0-r0 | — |
| Alpine v3.23 | freerdp +1 | 2.2.0-r0 | — |
| Alpine v3.22 | freerdp +1 | 2.2.0-r0 | — |
| Alpine v3.21 | freerdp | 2.2.0-r0 | — |
| Alpine v3.20 | freerdp | 2.2.0-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | freerdp | 2.2.0-r0 | — |
| Alpine v3.18 | freerdp | 2.2.0-r0 | — |
| Alpine v3.17 | freerdp | 2.2.0-r0 | — |
| Alpine v3.16 | freerdp | 2.2.0-r0 | — |
| Alpine v3.15 | freerdp | 2.2.0-r0 | — |
| Alpine v3.14 | freerdp | 2.2.0-r0 | — |
| Alpine v3.13 | freerdp | 2.2.0-r0 | — |
| Alpine v3.12 | freerdp | 2.2.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | freerdp +4 | 2:2.2.0-1.el8 | ELSA-2021-1849 |
Advisories 12
- ALSA-2021:1849 Moderate: freerdp security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2644 Red Hat Enterprise Linux (FreeRDP): Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 4, 2026
- RHSA-2021:1849 Red Hat Security Advisory: freerdp security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4481-1 freerdp2 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3606-1 freerdp2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2021:1849 Moderate: freerdp security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2020:2409-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1332-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2408-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10768-1 freerdp-2.4.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2272-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2021-1849 Moderate: freerdp security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 25, 2021
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4r38-6hq7-j3j9
- https://github.com/FreeRDP/FreeRDP/blob/616af2d5b86dc24c7b3e89870dbcffd841d9a535/ChangeLog#L4
- https://github.com/FreeRDP/FreeRDP/pull/6382
- FEDORA-2020-8d5f86e29a vendor-advisory
- FEDORA-2020-a3432485db vendor-advisory
- openSUSE-SU-2020:1332 vendor-advisory
- USN-4481-1 vendor-advisory
- [debian-lts-announce] 20231007 [SECURITY] [DLA 3606-1] freerdp2 security update mailing-list