vulnerability

FreeBSD: VID-C9FF1150-5D63-11EE-BBAE-1C61B4739AC9 (CVE-2023-40184): xrdp -- Improper handling of session establishment errors allows bypassing OS-level session restrictions

Try Surface Command
Back to search
Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
Aug 30, 2023
Added
Sep 28, 2023
Modified
Jan 28, 2025

Description

xrdp is an open source remote desktop protocol (RDP) server. In versions prior to 0.9.23 improper handling of session establishment errors allows bypassing OS-level session restrictions. The `auth_start_session` function can return non-zero (1) value on, e.g., PAM error which may result in in session restrictions such as max concurrent sessions per user by PAM (ex ./etc/security/limits.conf) to be bypassed. Users (administrators) don't use restrictions by PAM are not affected. This issue has been addressed in release version 0.9.23. Users are advised to upgrade. There are no known workarounds for this issue.

Solution

freebsd-upgrade-package-xrdp

References

Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.

Try it today