Description
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | <= 2.0.0 | — |
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 10 | freerdp2 | 2.3.0+dfsg1-2+deb10u3 | DLA-3606-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | freerdp2 | 2.1.1+dfsg1-0ubuntu0.20.04.1 | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp2 | 2.1.1+dfsg1-0ubuntu0.18.04.1 | — |
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | freerdp +4 | 2:2.1.1-1.el8 | RHSA-2020:4647 |
| RHEL 8 | vinagre | 3.22.0-23.el8 | RHSA-2020:4647 |
| RHEL 7 | freerdp +4 | 2.1.1-2.el7 | RHSA-2020:4031 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | freerdp-devel | 2:2.1.1-1.el8 | ALSA-2020:4647 |
| AlmaLinux 8 | vinagre | 3.22.0-23.el8 | ALSA-2020:4647 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | vinagre | 3.22.0-23.el8 | RLSA-2020:4647 |
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 Leap 15.1 | freerdp | 2.1.2-lp151.5.6.1 | openSUSE-SU-2020:1090-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | freerdp +4 | 2.1.1-2.amzn2 | ALAS2-2020-1516 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | freerdp +4 | 2:2.1.1-1.el8 | ELSA-2020-4647 |
| Oracle Linux 8 | vinagre | 3.22.0-23.el8 | ELSA-2020-4647 |
| Oracle Linux 7 | freerdp +4 | 2.1.1-2.el7 | ELSA-2020-4031 |
Advisories 12
- ALSA-2020:4647 Moderate: freerdp and vinagre security, bug fix, and enhancement update AlmaLinux Security Advisories · Nov 5, 2026
- RHSA-2020:4647 Red Hat Security Advisory: freerdp and vinagre security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2020:4031 Red Hat Security Advisory: freerdp security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- DLA-3606-1 freerdp2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2020:4647 Moderate: freerdp and vinagre security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 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
- SUSE-SU-2020:2272-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2020-4647 Moderate: freerdp and vinagre security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 10, 2020
- ALAS2-2020-1516 Moderate: freerdp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 22, 2020
- ELSA-2020-4031 Moderate: freerdp security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020