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xrdp is an open source remote desktop protocol server. Access to the font glyphs in xrdp_painter.c is not bounds-checked . Since some of this data is controllable by the user, this can result in an out-of-bounds read within the xrdp executable. The vulnerability allows an out-of-bounds read within a potentially privileged process. On non-Debian platforms, xrdp tends to run as root. Potentially an out-of-bounds write can follow the out-of-bounds read. There is no denial-of-service impact, providing xrdp is running in forking mode. This issue has been addressed in release 0.9.23.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xrdp | Aug 22, 2024 | Sep 27, 2023 |
| Debian | — | Upgrade xrdp | May 15, 2025 | Sep 27, 2023 |
| Freebsd | — | Upgrade xrdp | Sep 28, 2023 | Sep 27, 2023 |
| Suse | — | Upgrade librfxencode0Upgrade libpainter0Upgrade xrdp-develUpgrade xrdp | Nov 28, 2023 | Sep 27, 2023 |
| Ubuntu | — | Upgrade xrdp (Ubuntu Pro) | Nov 13, 2023 | Sep 27, 2023 |
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