A xrdp security update has been released for Fedora 38.

[SECURITY] Fedora 38 Update: xrdp-0.9.23-1.fc38

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Fedora Update Notification
FEDORA-2023-b1d585e148
2023-09-10 01:18:51.874058
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Name : xrdp
Product : Fedora 38
Version : 0.9.23
Release : 1.fc38
URL : http://www.xrdp.org/
Summary : Open source remote desktop protocol (RDP) server
Description :
xrdp provides a fully functional RDP server compatible with a wide range
of RDP clients, including FreeRDP and Microsoft RDP client.

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Update Information:

Release notes for xrdp v0.9.23 (2023/08/31) General announcements - Running
xrdp and xrdp-sesman on separate hosts is still supported by this release, but
is now deprecated. This is not secure. A future v1.0 release will replace the
TCP socket used between these processes with a Unix Domain Socket, and then
cross-host running will not be possible. Security fixes - CVE-2023-40184:
Improper handling of session establishment errors allows bypassing OS-level
session restrictions (Reported by @gafusss) Bug fixes - Environment variables
set by PAM modules are no longer restricted to around 250 characters (#2712) -
X11 clipboard clients now no longer hang when requesting a clipboard format
which isn't available (#2767) New features No new features in this release.
Internal changes - Introduce release tarball generation script (#2703) -
cppcheck version used for CI bumped to 2.11 (#2738) Known issues - On-the-fly
resolution change requires the Microsoft Store version of Remote Desktop client
but sometimes crashes on connect (#1869) - xrdp's login dialog is not relocated
at the center of the new resolution after on-the-fly resolution change happens
(#1867)
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ChangeLog:

* Fri Sep 1 2023 Bojan Smojver [bojan@rexursive.com] - 1:0.9.23-1
- Update to 0.9.23
- CVE-2023-40184
* Sat Jul 22 2023 Fedora Release Engineering [releng@fedoraproject.org] - 1:0.9.22.1-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
* Tue Jun 13 2023 Leigh Scott [leigh123linux@gmail.com] - 1:0.9.22.1-3
- Rebuild fo new imlib2
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References:

[ 1 ] Bug #2236307 - CVE-2023-40184 xrdp: xdp: restriction bypass via improper session handling [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2236307
[ 2 ] Bug #2236308 - CVE-2023-40184 xrdp: xdp: restriction bypass via improper session handling [epel-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2236308
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2023-b1d585e148' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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