Out-of-bounds read in xrdp - CVE-2022-23483

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Main Vulnerability Database Vulnerabilities #VU70103

Out-of-bounds read in xrdp - CVE-2022-23483

Published: December 12, 2022


Vulnerability identifier: #VU70103
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-23483
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in libxrdp_send_to_channel() function. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.


Affected software

xrdp
Debian Linux
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Enterprise Storage
Fedora
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
Ubuntu
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Realtime Extension
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Module for Basesystem
openSUSE Leap
xrdp (Ubuntu package)
xrdp-debugsource
xrdp-debuginfo
xrdp
libpainter0-debuginfo
libpainter0
librfxencode0
librfxencode0-debuginfo
xrdp-devel
xrdp (Debian package)

How to mitigate CVE-2022-23483

Install updates from vendor's website.

xrdp - update to 0.9.21
xrdp (Ubuntu package) - update to Ubuntu Pro
xrdp-debugsource - addressed in versions 0.9.0~git.1456906198.f422461-16.23.2, 0.9.0~git.1456906198.f422461-21.30.2, 0.9.6-150000.4.11.1, 0.9.10-3.8.1, 0.9.13.1-150200.4.15.1
xrdp-debuginfo - addressed in versions 0.9.0~git.1456906198.f422461-16.23.2, 0.9.0~git.1456906198.f422461-21.30.2, 0.9.6-150000.4.11.1, 0.9.10-3.8.1, 0.9.13.1-150200.4.15.1
xrdp - addressed in versions 0.9.0~git.1456906198.f422461-16.23.2, 0.9.0~git.1456906198.f422461-21.30.2, 0.9.6-150000.4.11.1, 0.9.10-3.8.1, 0.9.13.1-150200.4.15.1
libpainter0-debuginfo - addressed in versions 0.9.6-150000.4.11.1, 0.9.13.1-150200.4.15.1
libpainter0 - addressed in versions 0.9.6-150000.4.11.1, 0.9.13.1-150200.4.15.1
librfxencode0 - addressed in versions 0.9.6-150000.4.11.1, 0.9.13.1-150200.4.15.1
librfxencode0-debuginfo - addressed in versions 0.9.6-150000.4.11.1, 0.9.13.1-150200.4.15.1
xrdp-devel - addressed in versions 0.9.6-150000.4.11.1, 0.9.13.1-150200.4.15.1
xrdp - addressed in versions 0.9.21-1.el7, 0.9.21-1.el8, 0.9.21-1.el9, 0.9.21-1.fc35, 0.9.21-1.fc36, 0.9.21-1.fc37
xrdp (Debian package) - update to 0.9.21.1-1~deb11u1

External References

Related Security Bulletins