Description
xrdp 0.9.1 calls the PAM function auth_start_session() in an incorrect location, leading to PAM session modules not being properly initialized, with a potential consequence of incorrect configurations or elevation of privileges, aka a pam_limits.so bypass.
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 14 | xrdp | 0.9.1-9 | — |
| Debian 13 | xrdp | 0.9.1-9 | — |
| Debian 12 | xrdp | 0.9.1-9 | — |
| Debian 7 | xrdp | 0.5.0-2+deb7u1 | DLA-872-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | xrdp | 0.6.1-2ubuntu0.3+esm1 | USN-4815-1 |
| Ubuntu Pro 14.04 LTS | xrdp | 0.6.0-1ubuntu0.1+esm1 | USN-4815-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | xrdp | 0.9.0~git.1456906198.f422461-21.9.1 | SUSE-SU-2019:1847-1 |
| SLES 12 SP2 | xrdp | 0.9.0~git.1456906198.f422461-16.9.3 | SUSE-SU-2020:1943-1, SUSE-SU-2019:1860-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | xrdp | 0.9.0~git.1456906198.f422461-21.9.1 | SUSE-SU-2019:1847-1 |
| SLES for SAP 12 SP2 | xrdp | 0.9.0~git.1456906198.f422461-16.9.3 | SUSE-SU-2020:1943-1, SUSE-SU-2019:1860-1 |
| SUSE OpenStack Cloud 7 | xrdp | 0.9.0~git.1456906198.f422461-16.9.3 | SUSE-SU-2020:1943-1, SUSE-SU-2019:1860-1 |
| SUSE Enterprise Storage 4 | xrdp | 0.9.0~git.1456906198.f422461-16.9.3 | SUSE-SU-2019:1860-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xrdp | 0.9.15-2.2 | openSUSE-SU-2024:11526-1 |
Advisories 6
- USN-4815-1 xrdp vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- DLA-872-1 xrdp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:1847-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1943-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11526-1 libpainter0-0.9.15-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1860-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026