Description
xrdp is an open source RDP server. Versions through 0.10.5 have a heap-based buffer overflow in the EGFX (graphics dynamic virtual channel) implementation due to insufficient validation of client-controlled size parameters, allowing an out-of-bounds write via crafted PDUs. Pre-authentication exploitation can crash the process, while post-authentication exploitation may achieve remote code execution. This issue has been fixed in version 0.10.6. If users are unable to immediately update, they should run xrdp as a non-privileged user (default since 0.10.2) to limit the impact of successful exploitation.
Problem types
CWE-122: Heap-based Buffer Overflow
Product status
References
github.com/...s/xrdp/security/advisories/GHSA-jg6p-7fg8-9hh6
github.com/neutrinolabs/xrdp/releases/tag/v0.10.6