Description
libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.
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 | 2.1.1+dfsg1-1 | — |
| Debian 9 | freerdp | 1.1.0~git20140921.1.440916e+dfsg1-13+deb9u4 | DLA-2356-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | freerdp2 | 2.1.1+dfsg1-0ubuntu0.20.04.1 | USN-4379-1 |
| Ubuntu 18.04 LTS | freerdp | 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2 | USN-4382-2 |
| Ubuntu 18.04 LTS | freerdp2 | 2.1.1+dfsg1-0ubuntu0.18.04.1 | USN-4379-1 |
| Ubuntu 16.04 LTS | freerdp | 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4 | USN-4382-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | freerdp +4 | 2:2.0.0-46.rc4.el8_2.1 | RHSA-2020:2336 |
| RHEL 7 | freerdp +4 | 2.0.0-4.rc4.el7_8 | RHSA-2020:2334 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.1 EUS | freerdp +4 | 2:2.0.0-46.rc4.el8_1.1 | RHSA-2020:2354 |
| RHEL 8.0 E4S | freerdp +3 | 2:2.0.0-46.rc4.el8_0.1 | RHSA-2020:2335 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | freerdp | 2.1.2-15.7.1 | SUSE-SU-2020:2068-1 |
| SLES 15 SP1 | freerdp | 2.1.2-10.15.1 | SUSE-SU-2020:2032-1 |
| 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-lp151.5.6.1 | openSUSE-SU-2020:1090-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | freerdp +1 | 2.0.0-r0 | — |
| Alpine v3.23 | freerdp +1 | 2.0.0-r0 | — |
| Alpine v3.22 | freerdp +1 | 2.0.0-r0 | — |
| Alpine v3.21 | freerdp | 2.0.0-r0 | — |
| Alpine v3.20 | freerdp | 2.0.0-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | freerdp | 2.0.0-r0 | — |
| Alpine v3.18 | freerdp | 2.0.0-r0 | — |
| Alpine v3.17 | freerdp | 2.0.0-r0 | — |
| Alpine v3.16 | freerdp | 2.0.0-r0 | — |
| Alpine v3.15 | freerdp | 2.0.0-r0 | — |
| Alpine v3.14 | freerdp | 2.0.0-r0 | — |
| Alpine v3.13 | freerdp | 2.0.0-r0 | — |
| Alpine v3.12 | freerdp | 2.0.0-r0 | — |
| Alpine v3.11 | freerdp | 2.0.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | freerdp +4 | 2:2.0.0-46.rc4.el8_2.1 | ELSA-2020-2336 |
| Oracle Linux 7 | freerdp +4 | 2.0.0-4.rc4.el7_8 | ELSA-2020-2334 |
Advisories 16
- WID-SEC-2026-0897 Red Hat Enterprise Linux: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 1, 2026
- RHSA-2020:2354 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2020:2336 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2020:2334 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4382-1 freerdp vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-4379-1 freerdp2 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-4382-2 freerdp vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-2356-1 freerdp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:2068-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1090-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2032-1 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
- RHSA-2020:2335 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ELSA-2020-2334 Important: freerdp security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 5, 2020
- ELSA-2020-2336 Important: freerdp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 4, 2020
References
- https://github.com/FreeRDP/FreeRDP/commits/master
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qrh-8cp8-4x42
- https://pub.freerdp.com/cve/CVE-2020-11523/pocAnalysis_2.pdf
- USN-4379-1 vendor-advisory
- USN-4382-1 vendor-advisory
- openSUSE-SU-2020:1090 vendor-advisory
- [debian-lts-announce] 20200829 [SECURITY] [DLA 2356-1] freerdp security update mailing-list