What’s Vulnerable › Vulnerabilities

CVE-2023-42822: Unchecked access to font glyph info in xrdp

Description

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.

Affected products

How to fix

Upgrade to a fixed version: neutrinolabs xrdp 0.9.23.1. Check the vendor advisory for mitigations.

References

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